Basic Information

Faculty

• Faculty of Engineering

Concurrent Affiliation

• Center for the Promotion of Interdisciplinary Education and Research (C-PiER), スーパーグローバルコース 化学系ユニット

Professional Memberships

• 日本化学会
• 光化学協会
• 高分子学会
• Material Research Society
• The International Society for Optical Engineering
• The Society of Photopolymer Science and Technology
• The Japan Society of Applied Physics

Academic Degree

• (Kyoto University)
• (Kyoto University)

Research History

• From Aug. 2016, To Present

  Kyoto University, Graduate School of Engineering, Professor
• From Apr. 2007, To Jul. 2016

  Kyoto University, Graduate School of Engineering
• From Oct. 2006, To Mar. 2007

  Kyoto University, Graduate School of Engineering
• From Sep. 1997, To Sep. 2006

  Kyoto University, Graduate School of Engineering
• From May 2005, To May 2006

  英国インペリアルカレッジ 客員研究員

Language of Instruction

• English

ID,URL

• J-Global ID

  200901024810481301

researchmap URL

• https://researchmap.jp/read0057405

Research

Research Topics, Overview of the research

• Research Topics

  1. Photophysics and Photochemistry in Polymer Systems
  2. Nanostructures and Functions of Ultrathin Polymer Films
  3. Optoelectronic Properties of Semiconducting Polymers
  4. Plastic Solar Cells
  5. Structure and Local Dynamics of Polymers

• Overview of the research

  Our research interests include the design and development of novel optoelectronic functionality of polymeric materials through fabrication of well-defined structures of polymer assemblies. Current researches focus on spectroscopic and microscopic studies of photovoltaic conversion mechanism and morphology in polymer solar cells.

Research Interests

• 高分子光・電子物性
• 高分子光物理・光化学
• Polymer Solar Cells

Research Areas

• Nanotechnology/Materials, Polymer chemistry

Papers

• Constructing Robust and Multifunctional Superamphiphobic Surfaces by Using Two Different Nanostructures of Silicon Dioxide

  Nan Zhou; Shuhan Hou; Insub Noh; Qingqing Liu; Yanbin Wang; Hyung Do Kim; Qi Zhou; Hideo Ohkita; Biaobing Wang

  Langmuir, 11 Mar. 2025

  
• Pnictogen‐Bridged Sulfoximines: Effects of Element and N‐Substituent on Excited‐State Dynamics

  Koki Mizuta; Haruki Shimoji; Toshiki Fujii; Shunsuke Yamamoto; Hideo Ohkita; Kensuke Naka; Hiroaki Imoto

  ChemPhotoChem, Apr. 2025

  
• Impact of Spin-Coating Temperature on Morphology of Pb-Based Mixed Ion Perovskite Films and Their Solar Cell Performance

  Wakana Matsuda; Keishiro Goshima; Insub Noh; Hyung Do Kim; Ai Shimazaki; Richard Murdey; Michisato Toyoda; Atsushi Wakamiya; Hideo Ohkita; Shu Seki; Yasuhiro Tachibana

  ACS Applied Energy Materials, 10 Feb. 2025

  
• Dithienonaphthobisthiadiazole synthesized by thienannulation of electron-deficient rings: an acceptor building unit for high-performance π-conjugated polymers

  Tsubasa Mikie; Tomokazu Morioku; Shota Suruga; Momoka Hada; Yuki Sato; Hideo Ohkita; Itaru Osaka

  Chemical Science, 2024

  Access this paper :

  
• Simple π-Conjugated Polymers Based on Bithiazole for Nonfullerene Organic Photovoltaics

  Y Teshima; K Yamanaka; Y Sato; H Ohkita; T Mikie; M Saito; I Osaka

  ACS APPLIED MATERIALS & INTERFACES, Jan. 2024, Peer-reviewed

  Access this paper :

  
• Self-assembly of hierarchical porous structure for stretchable superhydrophobic films by delicately controlling the surface energy

  SH Hou; I Noh; M Yue; YB Wang; HD Kim; H Ohkita; BB Wang

  MATERIALS ADVANCES, Nov. 2023, Peer-reviewed

  Access this paper :

  
• A polar polyimide as multifunctional flame retardant for epoxy resin through constructing intimate 3D interpenetrating polymer network

  ZC Fan; I Noh; CL Zhuang; QQ Liu; YB Wang; HD Kim; M Yue; H Ohkita; BB Wang

  EUROPEAN POLYMER JOURNAL, Oct. 2023, Peer-reviewed

  Access this paper :

  
• A highly crystalline face-on π-conjugated polymer based on alkoxythiophene-flanked benzobisthiazole for organic photovoltaics

  S Doi; T Mikie; K Yamanaka; Y Sato; H Ohkita; M Saito; I Osaka

  POLYMER JOURNAL, Apr. 2024, Peer-reviewed

  Access this paper :

  
• Efficient Derivatization of a Thienobenzobisthiazole‐Based π‐Conjugated Polymer Through Late‐Stage Functionalization Towards High‐Efficiency Organic Photovoltaic Cells

  Hiroto Iwasaki; Kodai Yamanaka; Yuki Sato; Tsubasa Mikie; Masahiko Saito; Hideo Ohkita; Itaru Osaka

  Angewandte Chemie International Edition, 18 Nov. 2024

  Access this paper :

  
• Efficient Derivatization of a Thienobenzobisthiazole‐Based π‐Conjugated Polymer Through Late‐Stage Functionalization Towards High‐Efficiency Organic Photovoltaic Cells

  Hiroto Iwasaki; Kodai Yamanaka; Yuki Sato; Tsubasa Mikie; Masahiko Saito; Hideo Ohkita; Itaru Osaka

  Angewandte Chemie, 18 Nov. 2024

  
• Photon energy loss in ternary polymer solar cells based on nonfullerene acceptor as a third component

  J Jeon; S Hosoya; M Saito; I Osaka; H Ohkita; HD Kim

  BATTERY ENERGY, Aug. 2024, Peer-reviewed

  Access this paper :

  
• Manipulating the functionality and structures of π-conjugated polymers utilizing intramolecular noncovalent interactions towards efficient organic photovoltaics

  Satoshi Kamimura; Masahiko Saito; Yoshikazu Teshima; Kodai Yamanaka; Hiroyuki Ichikawa; Ai Sugie; Hiroyuki Yoshida; Jihun Jeon; Hyung Do Kim; Hideo Ohkita; Tsubasa Mikie; Itaru Osaka

  Chemical Science, Apr. 2024, Peer-reviewed

  Access this paper :

  
• Ordered π-conjugated polymer backbone in amorphous blend for high efficiency nonfullerene organic photovoltaics

  Masahiko Saito; Hiroya Yamada; Kakaraparthi Kranthiraja; Jihun Jeon; Hyung Do Kim; Tsubasa Mikie; Akinori Saeki; Hideo Ohkita; Itaru Osaka

  Communications Materials, 21 Sep. 2023, Peer-reviewed

  Access this paper :

  
• Transport properties of molecules and charge carriers in high-density polymer brushes

  Hideo Ohkita; Tomofumi Sakakiyama; Hiroaki Benten; Shinzaburo Ito; Yoshinobu Tsujii; Takeshi Fukuda

  Polymer Preprints, Japan, 2006

  
• Fabrication and characterization of layer-by-layer photovoltaic thin films with polythiophene derivatives

  Yoshifumi Ikeda; Akiko Mitani; Hideo Ohkita; Shinzaburo Ito; Hiroaki Benten

  Polymer Preprints, Japan, 2006

  
• Design of nanostructures of conjugated polymer-fullerene organic solar cells by layer-by-layer deposition technique

  Michihiro Ogawa; Hiroaki Benten; Hideo Ohkita; Shinzaburo Ito

  Polymer Preprints, Japan, 2006

  
• Structure control of phthalocyanine-based organic solar cells by layer-by-layer (LBL) deposition technique

  Naomi Kudo; Hiroaki Benten; Hideo Ohkita; Shinzaburo Ito

  Polymer Preprints, Japan, 2006

  
• Control of nano structures and performance of PPV-containing organic solar cells prepared by layer-by-layer deposition technique

  Michihiro Ogawa; Hiroaki Benten; Hideo Ohkita; Shinzaburo Ito

  Polymer Preprints, Japan, 2006

  
• Design of nano structures of thin film organic solar cells by layer-by-layer deposition technique and their photovoltaic properties

  Hiroaki Benten; Takefumi Abe; Michihiro Ogawa; Naomi Kudo; Hideo Ohkita; Shinzaburo Ito

  Polymer Preprints, Japan, 2006

  
• Molecular diffusion behavior in high-density graft films studied by fluorescent probe method

  Tomofumi Sakakiyama; Hideo Ohkita; Shinzaburo Ito; Hiroaki Benten; Yoshinobu Tsujii; Takeshi Fukuda

  Polymer Preprints, Japan, 2006

  
• Design of photovoltaic device and electric properties of ultrathin films consisting of poly(p-phenylene vinylene)

  Michihiro Ogawa; Naohiro Hamada; Hideo Ohkita; Masataka Ohoka; Shinzaburo Ito

  Polymer Preprints, Japan, 2005

  
• Preparation and photovoltaic property of conducting polymer-C60 modified SnO2 solid-state solar cell

  Naomi Kudo; Yuta Shimazaki; Masataka Ohoka; Hideo Ohkita; Shinzaburo Ito

  Polymer Preprints, Japan, 2005

  
• Photovoltaic properties of PEDOT-Ru nano-composite films fabricated by layer-by-layer deposition technique

  Takefumi Abe; Daiki Wakizaka; Toshiki Fushimi; Hideo Ohkita; Shinzaburo Ito

  Polymer Preprints, Japan, 2005

  
• Fabrication and hole transport properties of high-density graft films bearing ferrocene moiety

  Tomofumi Sakakiyama; Hideo Ohkita; Masataka Ohoka; Shinzaburo Ito; Yoshinobu Tsujii; Takeshi Fukuda

  Polymer Preprints, Japan, 2005

  
• Preparation and properties of conductive layer-by-layer ultrathin films bearing fullerene derivatives

  Takefumi Abe; Toshiki Fushimi; Hideo Ohkita; Masataka Ohoka; Shinzaburo Ito

  Polymer Preprints, Japan, 2005

  
• Control of charge transport properties of high-density graft films bearing ferrocene moiety

  Tomofumi Sakakiyama; Hideo Ohkita; Masataka Ohoka; Shinzaburo Ito; Yoshinobu Tsujii; Takeshi Fukuda

  Polymer Preprints, Japan, 2005

  
• Photoinduced charge separation in polymer solids studied by using intramolecular D-A compounds

  Hiroaki Benten; Hideo Ohkita; Shinzaburo Ito; Masahide Yamamoto

  Polymer Preprints, Japan, 2005

  
• π-Conjugated polymers and molecules enabling small photon energy loss simultaneously with high efficiency in organic photovoltaics

  Masahiko Saito; Hideo Ohkita; Itaru Osaka

  Journal of Materials Chemistry A, 21 Oct. 2020

  Access this paper :

  
• Efficiency limiting factors in perovskite solar cells

  Hideo Ohkita; Hyung Do Kim

  AM-FPD 2017 - 24th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, Proceedings, 08 Aug. 2017

  Access this paper :

  
• Spontaneous-Symmetry-Breaking Charge Separation Induced by Pseudo-Jahn–Teller Distortion in Organic Photovoltaic Material

  Takeaki Zaima; Wataru Ota; Naoki Haruta; Motoyuki Uejima; Hideo Ohkita; Tohru Sato

  The Journal of Physical Chemistry Letters, 25 Oct. 2023

  
• Exciton dynamics of a fused ring pi-conjugated nonfullerene molecule based on dithienonaphthobisthiadiazole

  Y Sato; T Mikie; H Yamada; I Osaka; H Ohkita

  JAPANESE JOURNAL OF APPLIED PHYSICS, Aug. 2023, Peer-reviewed

  Access this paper :

  
• Facile fabrication of flexible superhydrophobic surfaces with high durability and good mechanical strength through embedding silica nanoparticle into polymer substrate by spraying method

  SH Hou; I Noh; XL Shi; YB Wang; HD Kim; H Ohkita; BB Wang

  COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, May 2023, Peer-reviewed

  Access this paper :

  
• Halogen-Free p-Conjugated Polymers Based on Thienobenzobisthiazole for Efficient Nonfullerene Organic Solar Cells: Rational Design for Achieving High Backbone Order and High Solubility

  N Nakao; M Saito; T Mikie; T Ishikawa; J Jeon; HD Kim; H Ohkita; A Saeki; I Osaka

  ADVANCED SCIENCE, Feb. 2023, Peer-reviewed

  Access this paper :

  
• Interplay Between π‐Conjugated Polymer Donors and Acceptors Determines Crystalline Order of Their Blends and Photovoltaic Performance

  Kodai Yamanaka; Masahiko Saito; Tomoyuki Koganezawa; Hayato Saito; Hyung Do Kim; Hideo Ohkita; Itaru Osaka

  Advanced Energy Materials, Apr. 2023

  Access this paper :

  
• Correlating the structures and photovoltaic properties in phase-separated blends of conjugated donor polymers and acceptors

  Jihun Jeon; Kiyotaka Doi; Hyung Do Kim; Hiroki Ogawa; Mikihito Takenaka; Hideo Ohkita

  Polymer Journal, 12 Oct. 2022

  
• Triplet sensitization via charge recombination at organic heterojunction for efficient near-infrared to visible solid-state photon upconversion

  Yuji Sakamoto; Seiichiro Izawa; Hideo Ohkita; Masahiro Hiramoto; Yasunari Tamai

  Communications Materials, 18 Oct. 2022

  Access this paper :

  
• Nanomorphology dependence of the environmental stability of organic solar cells

  Woong Sung; Hansol Lee; Wookjin Choi; Se Gyo Han; Jimin Kim; Kwangwoo Cho; Seung Hyun Kim; Dongki Lee; Hyung Do Kim; Hideo Ohkita; Kilwon Cho

  NPG ASIA MATERIALS, Dec. 2022, Peer-reviewed

  Access this paper :

  
• Enhancing multiwalled carbon nanotubes/ poly(amide-imide) interfacial strength through grafting polar conjugated polymer on multiwalled carbon nanotubes

  Zicheng Fan; Yanbin Wang; Jihun Jeon; Hyung Do Kim; Yawen Fang; Xinlu Shi; Zhonglin Luo; Hideo Ohkita; Biaobing Wang

  SURFACES AND INTERFACES, Aug. 2022, Peer-reviewed

  
• Obvious improvement of dispersion of multiwall carbon nanotubes in polymer matrix through careful interface design

  Chengbi Chang; Yanbin Wang; Yuya Horiuchi; Hyung Do Kim; Yawen Fang; Hideo Ohkita; Biaobing Wang

  POLYMERS FOR ADVANCED TECHNOLOGIES, Jun. 2022, Peer-reviewed

  
• Controlling the charge carrier dynamics by modulating the orientation diversity of perovskites

  Wonhee Cha; Won-Young Cha; Insub Noh; Shu Seki; Hideo Ohkita; Dongho Kim

  MATERIALS CHEMISTRY FRONTIERS, Apr. 2022, Peer-reviewed

  
• Cascaded energy landscape as a key driver for slow yet efficient charge separation with small energy offset in organic solar cells

  Shin-ichiro Natsuda; Toshiharu Saito; Rei Shirouchi; Yuji Sakamoto; Taiki Takeyama; Yasunari Tamai; Hideo Ohkita

  ENERGY & ENVIRONMENTAL SCIENCE, Apr. 2022, Peer-reviewed

  Access this paper :

  
• Development of NIR emissive fully-fused bisboron complexes with pi-conjugated systems including multiple azo groups

  Masashi Nakamura; Masayuki Gon; Shin-Ichiro Natsuda; Yasunari Tamai; Hideo Ohkita; Kazuo Tanaka; Yoshiki Chujo

  DALTON TRANSACTIONS, Dec. 2021, Peer-reviewed

  
• Pronounced Backbone Coplanarization by p-Extension in a Sterically Hindered Conjugated Polymer System Leads to Higher Photovoltaic Performance in Non-Fullerene Solar Cells

  Naoya Nakao; Soichiro Ogawa; Hyung Do Kim; Hideo Ohkita; Tsubasa Mikie; Masahiko Saito; Itaru Osaka

  ACS APPLIED MATERIALS & INTERFACES, Dec. 2021, Peer-reviewed

  Access this paper :

  
• Singlet and Triplet Excited-State Dynamics of a Nonfullerene Electron Acceptor Y6

  Shin-ichiro Natsuda; Yuji Sakamoto; Taiki Takeyama; Rei Shirouchi; Toshiharu Saito; Yasunari Tamai; Hideo Ohkita

  JOURNAL OF PHYSICAL CHEMISTRY C, Sep. 2021, Peer-reviewed

  
• Nongeminate Recombination in All-Polymer Solar Cells with Different Crystallinities

  Hyung Do Kim; Yuya Horiuchi; Shinta Iwasaki; Tomohiro Fukuhara; Hideo Ohkita

  ACS APPLIED MATERIALS & INTERFACES, Aug. 2021, Peer-reviewed

  Access this paper :

  
• Improved Hole-Transporting Properties in Conjugated Polymers Mixed with Polystyrene as an Insulating Polymer

  Yuya Horiuchi; Koshiro Midori; Hyung Do Kim; Hideo Ohkita

  JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY, 2021, Peer-reviewed

  Access this paper :

  
• Spatial Distribution of Ejected Electrons in Polymer Solids

  OHKITA Hideo

  Kobunshi, 01 Feb. 2002

  
• Effect of Terminal-Group Halogenation of Naphthalene-Based Nonfullerene Acceptors on Their Film Structure and Photophysical and Photovoltaic Properties

  Tomokazu Umeyama; Tatsuho Wada; Kensho Igarashi; Kosaku Kato; Akira Yamakata; Taiki Takeyama; Yuji Sakamoto; Yasunari Tamai; Hideo Ohkita; Keiichi Ishida; Tomoyuki Koganezawa; Shunsuke Ohtani; Kazuo Tanaka; Hiroshi Imahori

  ACS Applied Energy Materials, 27 Dec. 2021, Peer-reviewed

  
• Singlet Exciton Dynamics in Conjugated Polymer Films

  Ohkita Hideo; Tamai Yasunari; Guo Jiamo; Benten Hiroaki; Ito Shinzaburo

  Journal of The Society of Photographic Science and Technology of Japan, 2014

  
• Immediate and Temporal Enhancement of Power Conversion Efficiency in Surface-Passivated Perovskite Solar Cells

  Yongyoon Cho; Jueming Bing; Hyung Do Kim; Yong Li; Jianghui Zheng; Shi Tang; Martin A. Green; Atsushi Wakamiya; Shujuan Huang; Hideo Ohkita; Anita W. Y. Ho-Baillie

  ACS Applied Materials & Interfaces, 11 Aug. 2021

  Access this paper :

  
• Molecular Understanding of How the Interfacial Structure Impacts the Open-Circuit Voltage of Highly Crystalline Polymer Solar Cells

  Tomohiro Fukuhara; Koshi Yamazaki; Takuto Hidani; Masahiko Saito; Yasunari Tamai; Itaru Osaka; Hideo Ohkita

  ACS APPLIED MATERIALS & INTERFACES, Jul. 2021, Peer-reviewed

  Access this paper :

  
• Prolongation of the singlet exciton lifetime of nonfullerene acceptor films by the replacement of the central benzene core with naphthalene

  Tomokazu Umeyama; Kensho Igarashi; Yasunari Tamai; Tatsuho Wada; Taiki Takeyama; Daiki Sasada; Keiichi Ishida; Tomoyuki Koganezawa; Shunsuke Ohtani; Kazuo Tanaka; Hideo Ohkita; Hiroshi Imahori

  Sustainable Energy and Fuels, Apr. 2021

  
• Elucidating Mechanisms behind Ambient Storage-Induced Efficiency Improvements in Perovskite Solar Cells

  Yongyoon Cho; Hyung Do Kim; Jianghui Zheng; Jueming Bing; Yong Li; Meng Zhang; Martin A. Green; Atsushi Wakamiya; Shujuan Huang; Hideo Ohkita; Anita W.Y. Ho-Baillie

  ACS Energy Letters, 15 Feb. 2021

  Access this paper :

  
• Significantly Sensitized Ternary Blend Polymer Solar Cells with a Very Small Content of the Narrow-Band Gap Third Component That Utilizes Optical Interference

  Masahiko Saito; Yasunari Tamai; Hiroyuki Ichikawa; Hiroyuki Yoshida; Daisuke Yokoyama; Hideo Ohkita; Itaru Osaka

  Macromolecules, 08 Dec. 2020

  Access this paper :

  
• Sensitizer-host-annihilator ternary-cascaded triplet energy landscape for efficient photon upconversion in the solid state

  Yuji Sakamoto; Yasunari Tamai; Hideo Ohkita

  JOURNAL OF CHEMICAL PHYSICS, Oct. 2020, Peer-reviewed

  Access this paper :

  
• Role of Energy Offset in Nonradiative Voltage Loss in Organic Solar Cells

  Toshiharu Saito; Shin-ichiro Natsuda; Kenta Imakita; Yasunari Tamai; Hideo Ohkita

  Solar RRL, 10 Jun. 2020, Peer-reviewed

  Access this paper :

  
• Sn(IV)-free tin perovskite films realized by in situ Sn(0) nanoparticle treatment of the precursor solution

  Tomoya Nakamura; Shinya Yakumaru; Minh Anh Truong; Kyusun Kim; Jiewei Liu; Shuaifeng Hu; Kento Otsuka; Ruito Hashimoto; Richard Murdey; Takahiro Sasamori; Hyung Kim; Hideo Ohkita; Taketo Handa; Yoshihiko Kanemitsu; Atsushi Wakamiya

  NATURE COMMUNICATIONS, Jun. 2020, Peer-reviewed

  Access this paper :

  
• Two-Dimensional Exciton Diffusion in an HJ-Aggregate of Naphthobisoxadiazole-Based Copolymer Films

  Yasuhiro Murata; Taiki Takeyama; Yuji Sakamoto; Kento Yamaguchi; Yasunari Tamai; Hideo Ohkita

  JOURNAL OF PHYSICAL CHEMISTRY C, Jun. 2020, Peer-reviewed

  Access this paper :

  
• Efficient light-harvesting, energy migration, and charge transfer by nanographene-based nonfullerene small-molecule acceptors exhibiting unusually long excited-state lifetime in the film state

  Tomokazu Umeyama; Kensho Igarashi; Daiki Sasada; Yasunari Tamai; Keiichi Ishida; Tomoyuki Koganezawa; Shunsuke Ohtani; Kazuo Tanaka; Hideo Ohkita; Hiroshi Imahori

  CHEMICAL SCIENCE, Mar. 2020, Peer-reviewed

  Access this paper :

  
• Enhanced Charge Transport in a Conjugated Polymer Blended with an Insulating Polymer

  Hyung Do Kim; Ryo Iriguchi; Tomohiro Fukuhara; Hiroaki Benten; Hideo Ohkita

  CHEMISTRY-AN ASIAN JOURNAL, Mar. 2020, Peer-reviewed

  Access this paper :

  
• Improvement of Exciton Collection and Light-Harvesting Range in Ternary Blend Polymer Solar Cells Based on Two Non-Fullerene Acceptors

  Yanbin Wang; Changlong Zhuang; Yawen Fang; Hyung Do Kim; Huang Yu; Biaobing Wang; Hideo Ohkita

  NANOMATERIALS, Feb. 2020, Peer-reviewed

  Access this paper :

  
• Impact of Noncovalent Sulfur–Fluorine Interaction Position on Properties, Structures, and Photovoltaic Performance in Naphthobisthiadiazole-Based Semiconducting Polymers

  Saito, M.; Fukuhara, T.; Kamimura, S.; Ichikawa, H.; Yoshida, H.; Koganezawa, T.; Ie, Y.; Tamai, Y.; Kim, H.D.; Ohkita, H.; Osaka, I.

  Advanced Energy Materials, 2020, Peer-reviewed

  Access this paper :

  
• Enhanced Hole Transport in Ternary Blend Polymer Solar Cells

  Koshiro Midori; Tomohiro Fukuhara; Yasunari Tamai; Hyung Do Kim; Hideo Ohkita

  CHEMPHYSCHEM, Oct. 2019, Peer-reviewed

  Access this paper :

  
• Dithiazolylthienothiophene Bisimide: A Novel Electron-Deficient Building Unit for N-Type Semiconducting Polymers

  Yoshikazu Teshima; Masahiko Saito; Tomohiro Fukuhara; Tsubasa Mikie; Kimihiro Komeyama; Hiroto Yoshida; Hideo Ohkita; Itaru Osaka

  ACS Applied Materials and Interfaces, 03 Jul. 2019, Peer-reviewed

  Access this paper :

  
• The Effect of 4-tert-Butylpyridine Removal on Efficiency and Thermal Stability in Perovskite Solar Cells

  Yongyoon Cho; Hideo Ohkita; Yong Li; Jueming Bing; Jianghui Zheng; Shujuan Huang; Anita Ho-Baillie

  JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY, 2019, Peer-reviewed

  Access this paper :

  
• Quadrupolar D–A–D diketopyrrolopyrrole-based small molecule for ternary blend polymer solar cells

  Yanbin Wang; Teng Wang; Jinxing Chen; Hyung Do Kim; Penghan Gao; Biaobing Wang; Ryo Iriguchi; Hideo Ohkita

  Dyes and Pigments, 01 Nov. 2018, Peer-reviewed

  Access this paper :

  
• Ternary Blend Solar Cells Based on a Conjugated Polymer With Diketopyrrolopyrrole and Carbazole Units

  Yanbin Wang; Jinxing Chen; Hyung Do Kim; Biaobing Wang; Ryo Iriguchi; Hideo Ohkita

  FRONTIERS IN ENERGY RESEARCH, Oct. 2018, Peer-reviewed

  Access this paper :

  
• Ternary Blend Polymer Solar Cells Based on Wide-bandgap Polymer PDCBT and Low-bandgap Polymer PTB7-Th

  Hyung Do Kim; Ryosuke Shimizu; Hideo Ohkita

  CHEMISTRY LETTERS, Aug. 2018, Peer-reviewed

  Access this paper :

  
• Charge Traps in Lead-Halide Perovskites with Different Grain Sizes

  Hyung Do Kim; Hideo Ohkita

  JAPANESE JOURNAL OF APPLIED PHYSICS, Jul. 2018, Peer-reviewed

  Access this paper :

  
• Bimolecular Recombination and Fill Factor in Crystalline Polymer Solar Cells

  Tomohiro Fukuhara; Yasunari Tamai; Itaru Osaka; Hideo Ohkita

  JAPANESE JOURNAL OF APPLIED PHYSICS, Jul. 2018, Peer-reviewed

  
• Investigations on the charge transfer mechanism at donor/acceptor interfaces in the quest for descriptors of organic solar cell performance

  Azusa Muraoka; Mikiya Fujii; Kenji Mishima; Hiroki Matsunaga; Hiroaki Benten; Hideo Ohkita; Shinzaburo Ito; Koichi Yamashita

  Physical Chemistry Chemical Physics, 2018, Peer-reviewed

  Access this paper :

  
• Visible Sensitization for Non-Fullerene Polymer Solar Cells Using a Wide Bandgap Polymer

  Yanbin Wang; Hyung Do Kim; Biaobing Wang; Hideo Ohkita

  JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY, 2018, Peer-reviewed

  Access this paper :

  
• Origin of Open-Circuit Voltage Loss in Polymer Solar Cells and Perovskite Solar Cells

  Hyung Do Kim; Nayu Yanagawa; Ai Shimazaki; Masaru Endo; Atsushi Wakamiya; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  ACS APPLIED MATERIALS & INTERFACES, Jun. 2017, Peer-reviewed

  Access this paper :

  
• Charge Transport in Intermixed Regions of All-Polymer Solar Cells Studied by Conductive Atomic Force Microscopy

  Miki Osaka; Daisuke Mori; Hiroaki Benten; Hiroki Ogawa; Hideo Ohkita; Shinzaburo Ito

  ACS APPLIED MATERIALS & INTERFACES, May 2017, Peer-reviewed

  Access this paper :

  
• Potential Improvement in Fill Factor of Lead-Halide Perovskite Solar Cells

  Hyung Do Kim; Hideo Ohkita

  SOLAR RRL, May 2017, Peer-reviewed

  Access this paper :

  
• Open-circuit Voltage Loss in CH3NH3SnI3 Perovskite Solar Cells

  Hyung Do Kim; Yoshihiro Miyamoto; Hirofumi Kubota; Toshihiko Yamanari; Hideo Ohkita

  CHEMISTRY LETTERS, Feb. 2017, Peer-reviewed

  Access this paper :

  
• Intermixed Donor/Acceptor Region in Conjugated Polymer Blends Visualized by Conductive Atomic Force Microscopy

  Miki Osaka; Hiroaki Benten; Hideo Ohkita; Shinzaburo Ito

  MACROMOLECULES, Feb. 2017, Peer-reviewed

  Access this paper :

  
• Implication of Fluorine Atom on Electronic Properties, Ordering Structures, and Photovoltaic Performance in NaphthobisthiadiazoleBased Semiconducting Polymers

  Kazuaki Kawashima; Tomohiro Fukuhara; Yousuke Suda; Yasuhito Suzuki; Tomoyuki Koganezawa; Hiroyuki Yoshida; Hideo Ohkita; Itaru Osaka; Kazuo Takimiya

  JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Aug. 2016, Peer-reviewed

  Access this paper :

  
• Light-Induced Degradation Mechanism in Poly(3-hexylthiophene)/Fullerene Blend Solar Cells

  Yasunari Tamai; Hideo Ohkita; Miki Namatame; Kazuhiro Marumoto; Satoru Shimomura; Toshihiro Yamanari; Shinzaburo Ito

  ADVANCED ENERGY MATERIALS, Jun. 2016, Peer-reviewed

  Access this paper :

  
• ESR分光法を用いた有機太陽電池の劣化解析

  下村悟; 山成敏広; 玉井康成; 大北英生; 伊藤紳三郎; 渡邊孝弘; 生天目美貴; 丸本,一弘

  日本化学会第96春季年会 予稿集, Mar. 2016

  
• Photovoltaic Performance of Perovskite Solar Cells with Different Grain Sizes

  Hyung Do Kim; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  ADVANCED MATERIALS, Feb. 2016, Peer-reviewed

  
• Ternary Blend of Conjugated Polymers for Broadening the Absorption Bandwidth of Polymer Solar Cells

  Hiroaki Benten; Takaya Nishida; Daisuke Mori; Hideo Ohkita; Shinzaburo Ito

  JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY, 2016, Peer-reviewed

  Access this paper :

  
• Reduced Bimolecular Recombination in Polymer Solar Cells

  Tomohiro Fukuhara; Miki Osaka; Yasunari Tamai; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY, 2016, Peer-reviewed

  Access this paper :

  
• High-performance ternary blend all-polymer solar cells with complementary absorption bands from visible to near-infrared wavelengths

  Hiroaki Benten; Takaya Nishida; Daisuke Mori; Huajun Xu; Hideo Ohkita; Shinzaburo Ito

  ENERGY & ENVIRONMENTAL SCIENCE, 2016, Peer-reviewed

  Access this paper :

  
• Transient Absorption Spectroscopy for Polymer Solar Cells

  Hideo Ohkita; Yasunari Tamai; Hiroaki Benten; Shinzaburo Ito

  IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, Jan. 2016, Peer-reviewed

  Access this paper :

  
• Ultrafast Singlet Fission in a Push-Pull Low-Bandgap Polymer Film

  Yukitomo Kasai; Yasunari Tamai; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Dec. 2015, Peer-reviewed

  Access this paper :

  
• High-efficiency polymer solar cells with small photon energy loss

  Kazuaki Kawashima; Yasunari Tamai; Hideo Ohkita; Itaru Osaka; Kazuo Takimiya

  NATURE COMMUNICATIONS, Dec. 2015, Peer-reviewed

  Access this paper :

  
• Nanostructures for Efficient Hole Transport in Poly(3-hexylthiophene) Film: A Study by Conductive Atomic Force Microscopy

  Miki Osaka; Hiroaki Benten; Hideo Ohkita; Shinzaburo Ito; Hiroki Ogawa; Toshiji Kanaya

  JOURNAL OF PHYSICAL CHEMISTRY C, Oct. 2015, Peer-reviewed

  Access this paper :

  
• Interface Engineering for Ternary Blend Polymer Solar Cells with a Heterostructured Near-IR Dye

  Huajun Xu; Hideo Ohkita; Yasunari Tamai; Hiroaki Benten; Shinzaburo Ito

  ADVANCED MATERIALS, Oct. 2015, Peer-reviewed

  Access this paper :

  
• Electron Transport Nanostructures of Conjugated Polymer Films Visualized by Conductive Atomic Force Microscopy

  Yuya Kondo; Miki Osaka; Hiroaki Benten; Hideo Ohkita; Shinzaburo Ito

  ACS MACRO LETTERS, Sep. 2015, Peer-reviewed

  Access this paper :

  
• Exciton Diffusion in Conjugated Polymers: From Fundamental Understanding to Improvement in Photovoltaic Conversion Efficiency

  Yasunari Tamai; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  JOURNAL OF PHYSICAL CHEMISTRY LETTERS, Sep. 2015, Peer-reviewed

  Access this paper :

  
• Morphology-Limited Free Carrier Generation in Donor/Acceptor Polymer Blend Solar Cells Composed of Poly(3-hexylthiophene) and Fluorene-Based Copolymer

  Daisuke Mori; Hiroaki Benten; Hideo Ohkita; Shinzaburo Ito

  ADVANCED ENERGY MATERIALS, Jun. 2015, Peer-reviewed

  Access this paper :

  
• Efficient Exciton Harvesting through Long-Range Energy Transfer

  Yanbin Wang; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  CHEMPHYSCHEM, Apr. 2015, Peer-reviewed

  Access this paper :

  
• Molecular Design of Near-IR Dyes with Different Surface Energy for Selective Loading to the Heterojunction in Blend Films

  Huajun Xu; Takaaki Wada; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  SCIENTIFIC REPORTS, Mar. 2015, Peer-reviewed

  Access this paper :

  
• Highly efficient exciton harvesting and charge transport in ternary blend solar cells based on wide- and low-bandgap polymers

  Yanbin Wang; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2015, Peer-reviewed

  Access this paper :

  
• Ternary Blend Hybrid Solar Cells Incorporating Wide and Narrow Bandgap Polymers

  Hyung Do Kim; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  ACS APPLIED MATERIALS & INTERFACES, Oct. 2014, Peer-reviewed

  
• Highly efficient charge-carrier generation and collection in polymer/polymer blend solar cells with a power conversion efficiency of 5.7%

  Daisuke Mori; Hiroaki Benten; Izumi Okada; Hideo Ohkita; Shinzaburo Ito

  ENERGY & ENVIRONMENTAL SCIENCE, Sep. 2014, Peer-reviewed

  
• Measurement of Exciton Diffusion in a Well-Defined Donor/Acceptor Heterojunction based on a Conjugated Polymer and Cross-Linked Fullerene Derivative

  Yanbin Wang; Hiroaki Benten; Shunji Ohara; Daichi Kawamura; Hideo Ohkita; Shinzaburo Ito

  ACS APPLIED MATERIALS & INTERFACES, Aug. 2014, Peer-reviewed

  
• Near-IR dye sensitization of polymer blend solar cells

  Huajun Xu; Hideo Ohkita; Toshiaki Hirata; Hiroaki Benten; Shinzaburo Ito

  POLYMER, Jun. 2014, Peer-reviewed

  Access this paper :

  
• Charge Generation and Recombination in Fullerene-Attached Poly(3-hexylthiophene)-Based Diblock Copolymer Films

  Shunsuke Yamamoto; Hiroaki Yasuda; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito; Shoji Miyanishi; Keisuke Tajima; Kazuhito Hashimoto

  JOURNAL OF PHYSICAL CHEMISTRY C, May 2014, Peer-reviewed

  
• Triplet Exciton Dynamics in Fluorene-Amine Copolymer Films

  Yasunari Tamai; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  CHEMISTRY OF MATERIALS, Apr. 2014, Peer-reviewed

  Access this paper :

  
• Low-Bandgap Donor/Acceptor Polymer Blend Solar Cells with Efficiency Exceeding 4%

  Daisuke Mori; Hiroaki Benten; Izumi Okada; Hideo Ohkita; Shinzaburo Ito

  ADVANCED ENERGY MATERIALS, Feb. 2014, Peer-reviewed

  
• One-Dimensional Singlet Exciton Diffusion in Poly(3-hexylthiophene) Crystalline Domains

  Yasunari Tamai; Yuu Matsuura; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  JOURNAL OF PHYSICAL CHEMISTRY LETTERS, Jan. 2014, Peer-reviewed

  Access this paper :

  
• 2．過渡吸収分光法による有機薄膜太陽電池の光電変換機構の解明

  伊藤 紳三郎; 大北 英生; 辨天 宏明

  Electrochemistry, Jan. 2014, Peer-reviewed

  
• Open-circuit voltage of ternary blend polymer solar cells

  Huajun Xu; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  JAPANESE JOURNAL OF APPLIED PHYSICS, Jan. 2014, Peer-reviewed

  
• Dye Sensitization in the Visible Region for Low-Bandgap Polymer Solar Cells

  Yanbin Wang; Bo Zheng; Yasunari Tamai; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2014, Peer-reviewed

  Access this paper :

  
• Charge-carrier generation in organic solar cells using crystalline donor polymers

  Yasunari Tamai; Kazuki Tsuda; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2014, Peer-reviewed

  Access this paper :

  
• Electron-donor function of methanofullerenes in donor-acceptor bulk heterojunction systems

  Yutaka Ie; Makoto Karakawa; Seihou Jinnai; Hiroyuki Yoshida; Akinori Saeki; Shu Seki; Shunsuke Yamamoto; Hideo Ohkita; Yoshio Aso

  CHEMICAL COMMUNICATIONS, 2014, Peer-reviewed

  Access this paper :

  
• Near-IR Sensitization of Polymer Solar Cells Incorporating Low-Bandgap Small Molecule

  Yanbin Wang; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  Trans.Mat.Res.Soc.Japan, 2014, Peer-reviewed

  
• Near-Infrared Absorbing Thienoisoindigo-Based Copolymers for Organic Photovoltaics

  Marina Ide; Yoshiko Koizumi; Akinori Saeki; Yuta Izumiya; Hideo Ohkita; Shinzaburo Ito; Shu Seki

  JOURNAL OF PHYSICAL CHEMISTRY C, Dec. 2013, Peer-reviewed

  
• Electron-Donor Function of [6,6]-Phenyl-C61-Butyric Acid Methyl Ester in Bulk Heterojunction Solar Cells

  Y. Ie; M. Karakawa; H. Yoshida; A. Saeki; H. Ohkita; Y. Aso

  Dec. 2013, Peer-reviewed

  
• Syntheses, structures, and photochemical properties of (mu(3)-O) tris {bis(mu-carboxylato)} trimanganese complexes with naphthylacetate ligands with relevance to artificial solar energy-harvesting systems

  Misaki Nakai; Takuzo Funabiki; Chikara Ohtsuki; Masafumi Harada; Akio Ichimura; Rika Tanaka; Takanori Nishioka; Isamu Kinoshita; Masahiro Mikuriya; Jiamo Guo; Hiroaki Benten; Hideo Ohkita; Shinzaburo Ito; Makoto Obata; Yasuo Nakabayashi; Shigenobu Yano

  INORGANICA CHIMICA ACTA, Sep. 2013, Peer-reviewed

  
• Dynamical Excimer Formation in Rigid Carbazolophane via Charge Transfer State

  Yasunari Tamai; Hideo Ohkita; Jiro Shimada; Hiroaki Benten; Shinzaburo Ito; Sho Yamanaka; Kenji Hisada; Keita Tani; Koji Kubono; Teruo Shinmyozu

  JOURNAL OF PHYSICAL CHEMISTRY A, Aug. 2013, Peer-reviewed

  Access this paper :

  
• Development of highly conductive nanodomains in poly(3-hexylthiophene) films studied by conductive atomic force microscopy

  Mild Osaka; Hiroaki Benten; Li-Ting Lee; Hideo Ohkita; Shinzaburo Ito

  POLYMER, Jun. 2013, Peer-reviewed

  
• Dye sensitization of polymer/fullerene solar cells incorporating bulky phthalocyanines

  Huajun Xu; Takaaki Wada; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  ELECTROCHIMICA ACTA, Jun. 2013, Peer-reviewed

  Access this paper :

  
• Efficient Charge Generation and Collection in Amorphous Polymer-Based Solar Cells

  Shunsuke Yamamoto; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito; Shuhei Yamamoto; Daisuke Kitazawa; Jun Tsukamoto

  JOURNAL OF PHYSICAL CHEMISTRY C, Jun. 2013, Peer-reviewed

  
• Singlet Fission in Poly(9,9 '-di-n-octylfluorene) Films

  Yasunari Tamai; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  JOURNAL OF PHYSICAL CHEMISTRY C, May 2013, Peer-reviewed

  Access this paper :

  
• Dye sensitization in polymer/ZnO/dye ternary hybrid solar cells

  Hyung Do Kim; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  Chemistry Letters, 2013, Peer-reviewed

  
• Near-infrared dye sensitization of polymer/polymer thin-film solar cells

  Shinzaburo Ito; Toshiaki Hirata; Daisuke Mori; Hiroaki Benten; Hideo Ohkita; Satoshi Honda

  Molecular Crystals and Liquid Crystals, 2013, Peer-reviewed

  
• Development of Polymer Blend Solar Cells Composed of Conjugated Donor and Acceptor Polymers

  Shinzaburo Ito; Toshiaki Hirata; Daisuke Mori; Hiroaki Benten; Li-Ting Lee; Hideo Ohkita

  JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY, 2013, Peer-reviewed

  
• Polymer/Polymer Blend Solar Cells Improved by Using High-Molecular-Weight Fluorene-Based Copolymer as Electron Acceptor

  Daisuke Mori; Hiroaki Benten; Hideo Ohkita; Shinzaburo Ito; Kunihito Miyake

  ACS APPLIED MATERIALS & INTERFACES, Jul. 2012, Peer-reviewed

  
• Formation Mechanism of Fullerene Cation in Bulk Heterojunction Polymer Solar Cells

  Shunsuke Yamamoto; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  ADVANCED FUNCTIONAL MATERIALS, Jul. 2012, Peer-reviewed

  Access this paper :

  
• Role of Interfacial Charge Transfer State in Charge Generation and Recombination in Low-Bandgap Polymer Solar Cell

  Shunsuke Yamamoto; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  JOURNAL OF PHYSICAL CHEMISTRY C, Jul. 2012, Peer-reviewed

  Access this paper :

  
• Spectroscopic Analysis of NIR-Dye Sensitization in Bulk Heterojunction Polymer Solar Cells

  Shinzaburo Ito; Hideo Ohkita; Hiroaki Benten; Satoshi Honda

  AMBIO, Mar. 2012, Peer-reviewed

  Access this paper :

  
• Current Mode Atomic Force Microscopy (C-AFM) Study for Local Electrical Characterization of Conjugated Polymer Blends

  Li-Ting Lee; Shinzaburo Ito; Hiroaki Benten; Hideo Ohkita; Daisuke Mori

  AMBIO, Mar. 2012, Peer-reviewed

  
• Molecular Understanding of the Open-Circuit Voltage of Polymer:Fullerene Solar Cells

  Shunsuke Yamamoto; Akiko Orimo; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  ADVANCED ENERGY MATERIALS, Feb. 2012, Peer-reviewed

  Access this paper :

  
• Near-infrared Dye Sensitization in Bulk Heterojnction Polymer Solar Cells

  S. Ito; H. Ohkita; H. Benten; S. Honda

  GRAND CHALLENGES IN ENERGY CONVERSION AND STORAGE, 2012, Peer-reviewed

  Access this paper :

  
• Transient absorption spectroscopy of polymer-based thin-film solar cells

  Hideo Ohkita; Shinzaburo Ito

  POLYMER, Sep. 2011, Peer-reviewed

  
• Polymer/Polymer Blend Solar Cells with 2.0% Efficiency Developed by Thermal Purification of Nanoscale-Phase-Separated Morphology

  Daisuke Mori; Hiroaki Benten; Junya Kosaka; Hideo Ohkita; Shinzaburo Ito; Kunihito Miyake

  ACS APPLIED MATERIALS & INTERFACES, Aug. 2011, Peer-reviewed

  
• Selective Dye Loading at the Heterojunction in Polymer/Fullerene Solar Cells

  Satoshi Honda; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  ADVANCED ENERGY MATERIALS, Jul. 2011, Peer-reviewed

  
• Light-Harvesting Mechanism in Polymer/Fullerene/Dye Ternary Blends Studied by Transient Absorption Spectroscopy

  Satoshi Honda; Seiichirou Yokoya; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  JOURNAL OF PHYSICAL CHEMISTRY C, Jun. 2011, Peer-reviewed

  
• Conductive and photovoltaic properties of multilayered ultrathin films designed by layer-by-layer assembly of titanium oxides

  Kohji Masuda; Sumiko Morita; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  THIN SOLID FILMS, Feb. 2011, Peer-reviewed

  Access this paper :

  
• Charge generation dynamics in polymer/polymer solar cells studied by transient absorption spectroscopy

  Hideo Ohkita; Junya Kosaka; Jiamo Guo; Hiroaki Benten; Shinzaburo Ito

  JOURNAL OF PHOTONICS FOR ENERGY, 2011, Peer-reviewed

  
• Fabrication and Conductive Properties of Multilayered Ultrathin Films Designed by Layer-by-Layer Assembly of Water-Soluble Fullerenes

  Kohji Masuda; Takefumi Abe; Hiroaki Benten; Hideo Ohkita; Shinzaburo Ito

  LANGMUIR, Aug. 2010, Peer-reviewed

  Access this paper :

  
• Bimodal Polarons and Hole Transport in Poly(3-hexylthiophene):Fullerene Blend Films

  Jiamo Guo; Hideo Ohkita; Seiichirou Yokoya; Hiroaki Benten; Shinzaburo Ito

  JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Jul. 2010, Peer-reviewed

  Access this paper :

  
• Charge Generation and Recombination Dynamics in Poly(3-hexylthiophene)/Fullerene Blend Films with Different Regioregularities and Morphologies

  Jiamo Guo; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, May 2010, Peer-reviewed

  Access this paper :

  
• Surface segregation at the aluminum interface of poly(3-hexylthiophene)/fullerene solar cells

  Akiko Orimo; Kohji Masuda; Satoshi Honda; Hiroaki Benten; Shinzaburo Ito; Hideo Ohkita; Hiroshi Tsuji

  APPLIED PHYSICS LETTERS, Jan. 2010, Peer-reviewed

  Access this paper :

  
• Exciton Generation and Diffusion in Multilayered Organic Solar Cells Designed by Layer-by-Layer Assembly of Poly(p-phenylenevinylene)

  Kohji Masuda; Yoshifumi Ikeda; Michihiro Ogawa; Hiroaki Benten; Hideo Ohkita; Shinzaburo Ito

  ACS APPLIED MATERIALS & INTERFACES, Jan. 2010, Peer-reviewed

  Access this paper :

  
• Solution-processed multilayered polymer solar cells designed by layer-by-layer assembly of poly(p-phenylenevinylene)s with dimethylsulfoxide

  K Masuda; Y Ikeda; H Ohkita; M Ogawa; H Benten; S Ito

  TRANSACTIONS OF MATERIALS RESEARCH SOCIETY OF JAPAN, 2010, Peer-reviewed

  Access this paper :

  
• Multi-colored dye sensitization of polymer/fullerene bulk heterojunction solar cells

  Satoshi Honda; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  CHEMICAL COMMUNICATIONS, 2010, Peer-reviewed

  Access this paper :

  
• Near-IR Femtosecond Transient Absorption Spectroscopy of Ultrafast Polaron and Triplet Exciton Formation in Polythiophene Films with Different Regioregularities

  Jiamo Guo; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Nov. 2009, Peer-reviewed

  Access this paper :

  
• Simultaneous multi-photon ionization of aromatic molecules in polymer solids with ultrashort pulsed lasers

  Jiamo Guo; Tadahiro Togami; Hiroaki Benten; Hideo Ohkita; Shinzaburo Ito

  CHEMICAL PHYSICS LETTERS, Jun. 2009, Peer-reviewed

  Access this paper :

  
• Hybrid solar cells of layer-by-layer thin films with a polymer/fullerene bulk heterojunction

  Kohji Masuda; Michihiro Ogawa; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  SOLAR ENERGY MATERIALS AND SOLAR CELLS, Jun. 2009, Peer-reviewed

  Access this paper :

  
• Improvement of the Light-Harvesting Efficiency in Polymer/Fullerene Bulk Heterojunction Solar Cells by Interfacial Dye Modification

  Satoshi Honda; Takahiro Nogami; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  ACS APPLIED MATERIALS & INTERFACES, Apr. 2009, Peer-reviewed

  Access this paper :

  
• Fabrication and photovoltaic properties of multilayered thin films designed by layer-by-layer assembly of poly(p-phenylenevinylene)s

  Michihiro Ogawa; Mika Tamanoi; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  SOLAR ENERGY MATERIALS AND SOLAR CELLS, Mar. 2009, Peer-reviewed

  Access this paper :

  
• Synthesis and Photophysical Properties of Tris-bridged [3.3.n](3,6,9)Carbazolophanes

  Keita Tani; Naoki Sakumoto; Koji Kubono; Kazushige Hori; Yasuo Tohda; Hiroaki Benten; Hideo Ohkita; Shinzaburo Ito; Masahide Yamamoto

  CHEMISTRY LETTERS, Feb. 2009, Peer-reviewed

  Access this paper :

  
• Layer-by-layer deposition films of copper phthalocyanine derivative; their photoelectrochemical properties and application to solution-processed thin-film organic solar cells

  Hiroaki Benten; Naomi Kudo; Hideo Ohkita; Shinzaburo Ito

  THIN SOLID FILMS, Jan. 2009, Peer-reviewed

  Access this paper :

  
• Charge separation and fullerene triplet formation in blend films of polyfluorene polymers with [6,6]-phenyl C61 butyric acid methyl ester

  Jessica J. Benson-Smith; Hideo Ohkita; Steffan Cook; James R. Durrant; Donal D. C. Bradley; Jenny Nelson

  DALTON TRANSACTIONS, 2009, Peer-reviewed

  Access this paper :

  
• Formation of methanofullerene cation in bulk heterojunction polymer solar cells studied by transient absorption spectroscopy

  Shunsuke Yamamoto; Jiamo Guo; Hideo Ohkita; Shinzaburo Ito

  ADVANCED FUNCTIONAL MATERIALS, Sep. 2008, Peer-reviewed

  Access this paper :

  
• Design of multilayered nanostructures and donor-acceptor interfaces in solution-processed thin-film organic solar cells

  Hiroaki Benten; Michihiro Ogawa; Hideo Ohkita; Shinzaburo Ito

  ADVANCED FUNCTIONAL MATERIALS, May 2008, Peer-reviewed

  Access this paper :

  
• Charge carrier formation in polythiophene/fullerene blend films studied by transient absorption spectroscopy

  Hideo Ohkita; Steffan Cook; Yeni Astuti; Warren Duffy; Steve Tierney; Weimin Zhang; Martin Heeney; Iain McCulloch; Jenny Nelson; Donal D. C. Bradley; James R. Durrant

  JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Mar. 2008, Peer-reviewed

  Access this paper :

  
• Direct observation of intersystem crossing in charge-pair states in polyfluorene polymer blends

  T. A. Ford; H. Ohkita; S. Cook; J. R. Durrant; N. C. Greenham

  CHEMICAL PHYSICS LETTERS, Mar. 2008, Peer-reviewed

  Access this paper :

  
• A photophysical study of PCBM thin films

  Steffan Cook; Hideo Ohkita; Youngkyoo Kim; Jessica J. Benson-Smith; Donal D. C. Bradley; James R. Durrant

  CHEMICAL PHYSICS LETTERS, Sep. 2007

  Access this paper :

  
• Intramolecular singlet and triplet excimers of triply bridged [3.3.n](3,6,9)carbazolophanes

  Hiroaki Benten; Jiamo Guo; Hideo Ohkita; Shinzaburo Ito; Masahide Yamamoto; Naoki Sakumoto; Kazushige Hori; Yasuo Tohda; Keita Tani

  JOURNAL OF PHYSICAL CHEMISTRY B, Sep. 2007

  Access this paper :

  
• Organic-inorganic hybrid solar cells based on conducting polymer and SnO2 nanoparticles chemically modified with a fullerene derivative

  Naomi Kudo; Yuta Shimazaki; Hideo Ohkita; Masataka Ohoka; Shinzaburo Ito

  SOLAR ENERGY MATERIALS AND SOLAR CELLS, Aug. 2007

  Access this paper :

  
• Improvement in conductive and photovoltaic properties of layer-by-layer poly(p-phenylenevinylene) thin films by low-temperature conversion

  Michihiro Ogawa; Naomi Kudo; Hideo Ohkita; Shinzaburo Ito; Hiroaki Benten

  APPLIED PHYSICS LETTERS, May 2007

  Access this paper :

  
• Improvement of charge injection efficiency in organic-inorganic hybrid solar cells by chemical modification of metal oxides with organic molecules

  Naomi Kudo; Satoshi Honda; Yuta Shimazaki; Hideo Ohkita; Shinzaburo Ito; Hiroaki Benten

  APPLIED PHYSICS LETTERS, Apr. 2007

  Access this paper :

  
• Synthesis and properties of partially overlapped [3.n](3,9)carbazolophanes

  Keita Tani; Shinya Yamamoto; Koji Kubono; Kazushige Hori; Yasuo Tohda; Hiroyuki Takemura; Yosuke Nakamura; Jun Nishimura; Hiroaki Benten; Hideo Ohkita; Shinzaburo Ito; Masahide Yamamoto

  CHEMISTRY LETTERS, Mar. 2007

  Access this paper :

  
• Singlet exciton transfer and fullerene triplet formation in polymer-fullerene blend films

  Steffan Cook; Hideo Ohkita; James R. Durrant; Youngkyoo Kim; Jessica J. Benson-Smith; Jenny Nelson; Donal D. C. Bradley

  APPLIED PHYSICS LETTERS, Sep. 2006

  Access this paper :

  
• Monomolecular triplet decay dynamics in fluorene-based conjugated polymer films studied by transient absorption spectroscopy

  H. Ohkita; S. Cook; T. A. Ford; N. C. Greenham; J. R. Durrant

  JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, Sep. 2006

  Access this paper :

  
• Structure and photochemical properties of (mu-alkoxo)bis(mu-carboxylato)diruthenium complexes with naphthylacetate Ligands

  M Nakai; T Funabiki; C Ohtsuki; M Harada; A Ichimura; R Tanaka; Kinoshita, I; M Mikuriya; H Benten; H Ohkita; S Ito; M Obata; S Yano

  INORGANIC CHEMISTRY, Apr. 2006

  Access this paper :

  
• Radical ion pair mediated triplet formation in polymer-fullerene blend films

  Hideo Ohkita; Steffan Cook; Yeni Astuti; Warren Duffy; Martin Heeney; Steve Tierney; Iain McCulloch; Donal D. C. Bradley; James R. Durrant

  CHEMICAL COMMUNICATIONS, 2006

  Access this paper :

  
• Intramolecular excimer emission of triply bridged [3.3.n](3,6,9)carbazolophanes

  H Benten; H Ohkita; S Ito; M Yamamoto; N Sakumoto; K Hori; Y Tohda; K Tani; Y Nakamura; J Nishimura

  JOURNAL OF PHYSICAL CHEMISTRY B, Oct. 2005

  Access this paper :

  
• Fabrication and electrochemical properties of high-density graft films with ferrocene moieties on ITO substrates

  T Sakakiyama; H Ohkita; M Ohoka; S Ito; Y Tsujii; T Fukudal

  CHEMISTRY LETTERS, Oct. 2005

  Access this paper :

  
• Photoinduced intramolecular charge separation in a polymer solid below the glass transition temperature

  H Benten; H Ohkita; S Ito; M Yamamoto; Y Tohda; K Tani

  JOURNAL OF CHEMICAL PHYSICS, Aug. 2005

  Access this paper :

  
• Fabrication and electrochemical properties of layer-by-layer deposited ultrathin polymer films bearing ferrocene moieties

  T Fushimi; A Oda; H Ohkita; S Ito

  THIN SOLID FILMS, Jul. 2005

  Access this paper :

  
• Photofunctional Ultrathin Films Prepared by High-Density Graft Polymerization

  Shinzaburo Ito; Junpei Kuno; Katsuhiro Yamashita; Masataka Ohoka; Hideo Ohkita; Yoshinobu Tsujii; Takeshi Fukuda

  Transactions of the Materials Research Society of Japan, Jun. 2005

  Access this paper :

  
• Photoelectrochemical Properties of Nano-Structured Polymer Ultrathin Films on Conductive Substrates

  Hideo Ohkita; Kuniaki Sakai; Shinzaburo Ito

  Transactions of the Materials Research Society of Japan, Jun. 2005

  Access this paper :

  
• Photocurrent generation in heterostructured ultrathin films fabricated by layer-by-layer deposition of polyelectrolytes bearing tris(2,2 '-bipyridine)ruthenium(II) and ferrocene moieties

  T Fushimi; A Oda; H Ohkita; S Ito

  LANGMUIR, Feb. 2005

  Access this paper :

  
• Triplet energy migration in layer-by-layer deposited ultrathin polymer films bearing tris(2,2 '-bipyridine)ruthenium(II) moieties

  T Fushimi; A Oda; H Ohkita; S Ito

  JOURNAL OF PHYSICAL CHEMISTRY B, Dec. 2004

  Access this paper :

  
• Preparation and photocurrent generation of nanostructured SnO2 films chemically modified with mono-substituted C-60-malonic acid

  H Ohkita; Y Shimazaki; M Ohoka; S Ito

  CHEMISTRY LETTERS, Dec. 2004

  Access this paper :

  
• Hole transport in conducting ultrathin films of PEDOT/PSS prepared by layer-by-layer deposition technique

  D Wakizaka; T Fushimi; H Ohkita; S Ito

  POLYMER, Nov. 2004

  Access this paper :

  
• Photoinduced intramolecular charge separation in poly(alkyl methacrylate) solids studied by using a fluorescent polarity probe

  H Benten; H Ohkita; S Ito; M Yamamoto; Y Tohda; K Tani

  JOURNAL OF PHYSICAL CHEMISTRY B, Oct. 2004

  Access this paper :

  
• Thermodynamics and kinetics of formation of intramolecular naphthalene dimer radical cation studied by near-IR transient absorption spectroscopy

  T Fushimi; Y Fujita; H Ohkita; S Ito

  BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, Aug. 2004

  Access this paper :

  
• Intramolecular dimer radical cations of alpha,omega-di(2-naphthyl)alkanes in solutions studied by near-IR transient absorption spectroscopy

  T Fushimi; Y Fujita; H Ohkita; S Ito

  JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, Jul. 2004

  Access this paper :

  
• Evaluation of local polarity of polymer solids by a rigid fluorescent probe of carbazole-terephthalate cyclophane

  H Benten; H Ohkita; S Ito; M Yamamoto; Y Tohda; K Tani

  POLYMER, Apr. 2004

  Access this paper :

  
• Determination of free-radical propagation rate coefficient of N-vinylindole by the pulsed-laser polymerization method

  M Ohoka; H Ohkita; S Ito; M Yamamoto

  POLYMER BULLETIN, Apr. 2004

  Access this paper :

  
• Exciplex emission of carbazole-terephthalate cyclophane and its application as a fluorescent probe for local polarity of solvents

  H Benten; H Ohkita; S Ito; M Yamamoto; Y Tohda; K Tani

  BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, Feb. 2004

  Access this paper :

  
• Spatial distribution and stabilization of electrons ejected by two-photon ionization of aromatic molecules in polymer solids

  H Ohkita

  KOBUNSHI RONBUNSHU, 2004

  Access this paper :

  
• Photoinduced electron transfer of carbazole-acceptor dyads in solution and in a polymer solid

  H Ohkita; H Benten; A Anada; H Noguchi; N Kido; S Ito; M Yamamoto

  PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2004

  Access this paper :

  
• Re-evaluation of propagation rate coefficient of free-radical polymerization of N-vinylcarbazole by the rotating-sector technique

  M Ohoka; S Misumi; H Ohkita; S Ito; M Yamamoto

  POLYMER JOURNAL, 2004

  Access this paper :

  
• Synthesis and properties of carbazole-terephthalate cyclophane

  K Tani; K Matsumura; E Togo; K Hori; Y Tohda; H Takemura; H Ohkita; S Ito; M Yamamoto

  CHEMISTRY LETTERS, Oct. 2003, Peer-reviewed

  Access this paper :

  
• Charge delocalization of naphthalene cations formed in triad molecules studied by near-IR transient absorption spectroscopy

  H Ohkita; T Fushimi; K Atsumi; Y Fujita; S Ito; M Yamamoto

  CHEMICAL PHYSICS LETTERS, Jun. 2003

  Access this paper :

  
• Dynamical formation of intramolecular carbazole dimer cations in poly(methyl methacrylate) solids below the glass transition temperature

  T Fushimi; H Ohkita; S Ito; M Yamamoto

  MACROMOLECULES, Dec. 2002

  Access this paper :

  
• Synthesis and properties of [2.2]paracyclo- and [2.2](1,4)naphthaleno-(3,6)carbazolophanes

  K Tani; K Matsumura; K Hori; Y Tohda; H Takemura; H Ohkita; S Ito; M Yamamoto

  CHEMISTRY LETTERS, Sep. 2002

  Access this paper :

  
• Preparation of porphyrin mono- and multi-layer films based on the polymer Langmuir-Blodgett method

  T Ogi; H Ohkita; S Ito; M Yamamoto

  THIN SOLID FILMS, Aug. 2002

  Access this paper :

  
• Photoinduced electron transfer in nanostructures of ultrathin polyimide films containing porphyrin moieties

  H Ohkita; T Ogi; R Kinoshita; S Ito; M Yamamoto

  POLYMER, Jun. 2002

  Access this paper :

  
• Intramolecular excimer emissions of syn- and anti-[3.3](3,9)carbazolophanes in solutions

  H Ohkita; S Ito; M Yamamoto; Y Tohda; K Tani

  JOURNAL OF PHYSICAL CHEMISTRY A, Mar. 2002

  Access this paper :

  
• Living polymerization of photofunctional carbazole polymers by atom transfer radical polymerization technique

  M Ohoka; J Kuno; K Yamashita; H Ohkita; S Ito; Y Tsujii; T Fukuda

  KOBUNSHI RONBUNSHU, 2002

  Access this paper :

  
• Synthesis and photophysical properties of [3.3](3,9)carbazolophanes

  K Tani; Y Tohda; H Takemura; H Ohkita; S Ito; M Yamamoto

  CHEMICAL COMMUNICATIONS, Oct. 2001, Peer-reviewed

  Access this paper :

  
• Photochromism and luminescence of dopant chromophores through two-photon ionization in polymer films

  M Yamamoto; H Ohkita; S Ito

  CHINESE JOURNAL OF POLYMER SCIENCE, Mar. 2001

  Access this paper :

  
• Spatial distribution of electrons ejected by two-photon excitation of aromatic molecules in polymer systems

  H Ohkita; H Ishii; T Ogi; S Ito; M Yamamoto

  RADIATION PHYSICS AND CHEMISTRY, Mar. 2001

  Access this paper :

  
• Direct evaluation of spatial distribution of electrons ejected by two-photon ionization of aromatic molecules in ultrathin polymer films

  H Ohkita; H Ishii; S Ito; M Yamamoto

  CHEMISTRY LETTERS, Sep. 2000

  Access this paper :

  
• Charge recombination of electron-cation pairs formed in polymer solids at 20 K through two-photon ionization

  H Ohkita; W Sakai; A Tsuchida; M Yamamoto

  JOURNAL OF PHYSICAL CHEMISTRY B, Dec. 1997, Peer-reviewed

  
• Stabilization of photoejected electrons produced through two-photon ionization of dopant chromophores in electron-accepting polyester film

  H Ohkita; T Koizumi; W Sakai; T Osako; M Ohoka; M Yamamoto

  CHEMICAL PHYSICS LETTERS, Sep. 1997, Peer-reviewed

  

Misc.

• Nongeminate charge recombination in organic photovoltaics

  Tomohiro Fukuhara; Yasunari Tamai; Hideo Ohkita

  Sustainable Energy and Fuels, 01 Sep. 2020

  Access this misc :

  
• 高分子固体における光化学過程の特性と制御

  山本 雅英; 久田 研次; 大北 英生

  日本化学繊維研究所講演集, Nov. 1998

  
• 光干渉を利用した増感作用による有機薄膜太陽電池の高効率化

  斎藤 慎彦; 玉井 康成; 吉田 弘幸; 横山 大輔; 大北 英生; 尾坂 格

  日本画像学会誌, 2022, Invited

  Access this misc :

  
• 電子のジャンプを制御する高分子ナノ構造の設計

  伊藤 紳三郎; 大北 英生

  日本化学繊維研究所講演集, Mar. 2002

  
• 光電変換を目指した高分子機能材料の開発とナノ構造の設計

  伊藤 紳三郎; 大北 英生

  日本化学繊維研究所講演集, Mar. 2005

  
• Progress in plastic solar cells

  大北 英生; 伊藤 紳三郎

  化学工業, Oct. 2008

  
• 超薄膜技術によるプラスチック太陽電池の設計

  伊藤 紳三郎; 大北 英生; 小川 倫弘

  日本化学繊維研究所講演集, Mar. 2008

  
• 次世代の高分子太陽電池を目指して

  伊藤 紳三郎; 大北 英生; 辨天 宏明

  日本化学繊維研究所講演集 Annual report of the Research Institute for Chemical Fibers, Japan, 2015

  
• 高分子太陽電池の限界を引き上げる新分子 : せっけんの構造をヒントに合成した高性能色素

  大北 英生; 伊藤 紳三郎

  化学 = Chemistry, Mar. 2016

  
• The Photopolymer Science and Technology Award

  Itaru Osaka; Hideo Ohkita

  JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY, 2017

  
• 結晶粒径を制御したペロブスカイト太陽電池の研究開発 (ペロブスカイト太陽電池の研究開発と実用化最新動向)

  大北 英生; キム ヒョンド; 辨天 宏明; 伊藤 紳三郎

  会報光触媒, Jun. 2016

  
• 高分子太陽電池とペロブスカイト太陽電池における開放電圧の起源

  KIM Hyung Do; 梁川奈侑; 嶋崎愛; 遠藤克; 若宮淳志; 大北英生; 辨天宏明; 伊藤紳三郎

  高分子学会予稿集(CD-ROM), 10 May 2016

  
• 電流計測原子間力顕微鏡でみる共役高分子薄膜のナノ電子構造

  辨天 宏明; 尾坂 美樹; 大北 英生

  日本化学繊維研究所講演集 Annual report of the Research Institute for Chemical Fibers, Japan, 2016

  
• Recent research progress of polymer donor/polymer acceptor blend solar cells

  Hiroaki Benten; Daisuke Mori; Hideo Ohkita; Shinzaburo Ito

  JOURNAL OF MATERIALS CHEMISTRY A, 2016

  Access this misc :

  
• 超短パルスレーザ分光による高分子太陽電池の光電変換初期過程の解明 (特集 超短パルス光が拓く新しい光物理)

  大北 英生; 伊藤 紳三郎

  光アライアンス, Jun. 2014

  
• 共役高分子の相分離膜で創る高効率プラスチック太陽電池

  伊藤 紳三郎; 辨天 宏明; 大北 英生

  日本化学繊維研究所講演集 Annual report of the Research Institute for Chemical Fibers, Japan, 2014

  
• 高分子太陽電池における電荷輸送効率の過渡光電特性解析

  児玉卓也; 山本俊介; 大北英生; 辨天宏明; 伊藤紳三郎

  応用物理学会秋季学術講演会講演予稿集(CD-ROM), 31 Aug. 2013

  
• 非晶性高分子薄膜太陽電池における電荷解離機構の解明

  山本俊介; 大北英生; 辨天宏明; 伊藤紳三郎; 山本修平; 北澤大輔; 塚本遵

  応用物理学会秋季学術講演会講演予稿集(CD-ROM), 31 Aug. 2013

  
• 高分子/高分子ブレンド太陽電池における開放電圧と界面エネルギー差

  小川薫; 山本俊介; 大北英生; 辨天宏明; 伊藤紳三郎; 吉田弘幸

  応用物理学会秋季学術講演会講演予稿集(CD-ROM), 31 Aug. 2013

  
• ポリチオフェン/フラーレンブレンド薄膜における電荷対再結合速度のエネルギーギャップ依存性

  和泉谷勇太; 山本俊介; 大北英生; 辨天宏明; 伊藤紳三郎

  高分子学会予稿集(CD-ROM), 14 May 2013

  
• 高分子/高分子ブレンド太陽電池の高い開放電圧に関する考察

  小川薫; 山本俊介; 大北英生; 辨天宏明; 伊藤紳三郎

  高分子学会予稿集(CD-ROM), 14 May 2013

  
• チオフェン/フラーレン共重合体膜における電荷生成・再結合

  大北英生; 安田裕明; 山本俊介; 辨天宏明; 伊藤紳三郎; 宮西将史; 但馬敬介; 橋本和仁

  応用物理学会春季学術講演会講演予稿集(CD-ROM), 11 Mar. 2013

  
• 分光法による高分子薄膜太陽電池の光電変換素過程の解明 (特別記念号)

  伊藤 紳三郎; 大北 英生; 辨天 宏明

  日本化学繊維研究所講演集 Annual report of the Research Institute for Chemical Fibers, Japan, 2013

  
• Exciton and Charge Dynamics in Polymer Solar Cells Studied by Transient Absorption Spectroscopy

  Hideo Ohkita; Shinzaburo Ito

  Green Energy and Technology, 2013

  
• チオフェン・フラーレンのミクロ相分離構造における電荷再結合ダイナミクス

  安田裕明; 山本俊介; 大北英生; 辨天宏明; 伊藤紳三郎; 宮西将史; 但馬敬介; 橋本和仁

  固体・表面光化学討論会講演要旨集, 21 Nov. 2012

  
• 狭バンドギャップ高分子薄膜太陽電池における電荷解離機構の解明

  山本俊介; 大北英生; 辨天宏明; 伊藤紳三郎

  高分子学会予稿集(CD-ROM), 05 Sep. 2012

  
• 高分子薄膜太陽電池におけるフラーレンの両極輸送機構

  山本俊介; 大北英生; 辨天宏明; 伊藤紳三郎

  応用物理学会学術講演会講演予稿集(CD-ROM), 27 Aug. 2012

  
• 第５章 有機薄膜太陽電池における評価手法 レーザ分光法による光電変換素過程の解明

  大北 英生

  有機薄膜太陽電池の研究最前線,, pp. 188-198, Jul. 2012

  
• 高分子太陽電池の界面色素増感

  大北 英生; 本田 哲士; 横家 星一郎; 辨天 宏明; 伊藤 紳三郎

  Molecular electronics and bioelectronics, 30 May 2012

  
• 高分子薄膜太陽電池におけるフラーレンカチオンの生成機構の解明

  山本俊介; 大北英生; 辨天宏明; 伊藤紳三郎

  高分子学会予稿集(CD-ROM), 15 May 2012

  
• 高分子太陽電池における界面CT状態を経由した電荷生成

  大北英生; 山本俊介; 辨天宏明; 伊藤紳三郎

  高分子学会予稿集(CD-ROM), 15 May 2012

  
• 高分子薄膜太陽電池における近赤外色素増感と界面への色素偏析

  伊藤紳三郎; 大北英生; 辨天宏明; 本田哲士

  日本化学繊維研究所講演集, 01 Mar. 2012

  
• 高分子太陽電池の開放電圧と再結合

  大北英生; 山本俊介; 織茂亜希子; 辨天宏明; 伊藤紳三郎

  応用物理学関係連合講演会講演予稿集(CD-ROM), 29 Feb. 2012

  
• Improvement of the Light-Harvesting Efficiency of Polymer Solar Cells by Dye Modification at the p-n Junction

  大北英生; 大北英生; 本田哲士; 横家星一郎; 辨天宏明; 伊藤紳三郎

  日本写真学会誌, 25 Dec. 2011, Peer-reviewed

  Access this misc :

  
• Studies on Dye-Sensitized Polymer Solar Cells

  大北 英生; 伊藤 紳三郎

  機能材料, Dec. 2011

  
• 狭バンドギャップ高分子太陽電池における光電変換ダイナミクス

  山本俊介; 大北英生; 辨天宏明; 伊藤紳三郎

  応用物理学会学術講演会講演予稿集(CD-ROM), 16 Aug. 2011

  
• 高分子薄膜太陽電池の開放電圧を決定づける分子論的機構

  山本俊介; 織茂亜希子; 大北英生; 辨天宏明; 伊藤紳三郎

  高分子学会予稿集(CD-ROM), 10 May 2011

  
• 高分子薄膜太陽電池における開放電圧を決定づける機構

  山本俊介; 織茂亜希子; 大北英生; 辨天宏明; 伊藤紳三郎

  応用物理学関係連合講演会講演予稿集(CD-ROM), 09 Mar. 2011

  
• PoIy(3-hexylthiophene)のブレ ンド薄膜における表面構造と結晶化

  玉井康成; 青木裕之; 大北英生; 伊藤紳三郎

  第14 回高分子表面研究討論会 (2011.1.28), 2011, Peer-reviewed

  
• 高分子太陽電池

  大北 英生

  高分子と光が織りなす新機能・新物性, 光機能性高分子材料の新展開,, pp. 104-111, 2011

  
• 過渡吸収分光法でみる近赤外高分子薄膜太陽電池におけるフラーレンカチオンの生成ダイナミクス

  山本俊介; 大北英生; 辨天宏明; 伊藤紳三郎

  光化学討論会講演要旨集, 08 Sep. 2010

  
• 狭バンドギャップ高分子を用いた薄膜太陽電池におけるフラーレンの両極輸送性

  山本俊介; 大北英生; 辨天宏明; 伊藤紳三郎

  高分子学会予稿集(CD-ROM), 01 Sep. 2010

  
• 近赤外高分子薄膜太陽電池におけるフラーレンの両極輸送機構の解明

  山本俊介; 大北英生; 辨天宏明; 伊藤紳三郎

  応用物理学会学術講演会講演予稿集(CD-ROM), 30 Aug. 2010

  
• 光・電子材料 レーザ分光で明らかにする高分子太陽電池の光電変換プロセス

  大北 英生; 伊藤 紳三郎

  未来材料, Aug. 2010, Peer-reviewed

  
• 狭バンドギャップ高分子を用いた薄膜太陽電池におけるフラーレンカチオンの生成機構

  山本俊介; 大北英生; 辨天宏明; 伊藤紳三郎

  高分子学会予稿集(CD-ROM), 11 May 2010

  
• Photochemistry in Polymer Thin-Film Solar Cells Studied by Transient Absorption Spectroscopy

  ITO Shinzaburo; OHKITA Hideo

  Photochemistry, 30 Apr. 2010

  
• 高分子太陽電池におけるフラーレンカチオンの生成ダイナミクス

  山本俊介; 大北英生; 辨天宏明; 伊藤紳三郎

  日本化学会講演予稿集, 12 Mar. 2010

  
• Influence of morphology and polymer chain conformation on the dynamics of carrier generation in polythiophene-fullerene blends

  Hiroaki Benten; Jiamo Guo; Hideo Ohkita; Shinzaburo Ito

  ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Mar. 2010

  
• 高分子薄膜太陽電池の近赤外色素増感による高効率化

  伊藤 紳三郎; 大北 英生; 本田 哲士; 横家 星一朗

  日本化学繊維研究所講演集, Mar. 2010

  Access this misc :

  
• 過渡吸収分光法による高分子薄膜太陽電池におけるフラーレンカチオンの生成ダイナミクスの解明

  山本俊介; 辨天宏明; 大北英生; 伊藤紳三郎

  固体・表面光化学討論会講演要旨集, 21 Nov. 2009

  
• 高分子薄膜太陽電池におけるフラーレン誘導体カチオンの生成機構

  山本俊介; 辨天宏明; 大北英生; 伊藤紳三郎

  光化学討論会講演要旨集, 16 Sep. 2009

  
• 有機薄膜太陽電池におけるフラーレンの両極輸送機構の解明

  山本俊介; 辨天宏明; 大北英生; 伊藤紳三郎

  応用物理学会学術講演会講演予稿集, 08 Sep. 2009

  
• 高分子薄膜太陽電池の界面制御

  大北 英生; 伊藤 紳三郎

  有機デバイスのための界面評価と制御技術,, pp. 132-147, Aug. 2009

  
• 過渡吸収分光法による共役高分子‐フラーレンブレンド薄膜におけるフラーレンカチオンの生成機構の解明

  山本俊介; GUO Jiamo; 大北英生; 伊藤紳三郎

  高分子学会予稿集(CD-ROM), 12 May 2009

  
• Design of multilayered nanostructures at donor-acceptor hetero junctions in polymer-based organic solar cells

  Hiroaki Benten; Michihiro Ogawa; Hideo Ohkita; Shinzaburo Ito

  ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Mar. 2009

  
• Improvement of photocurrent in bulk heterojunction polymer solar cells by introduction of dye molecules

  Satoshi Honda; Seiichirou Yokoya; Takahiro Nogami; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito

  ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Mar. 2009

  
• 薄膜過渡吸収分光法による高分子太陽電池の電荷輸送機構の解明

  伊藤 紳三郎; 大北 英生; 山本 俊介; 郭 嘉謨

  日本化学繊維研究所講演集, Mar. 2009

  Access this misc :

  
• 交互吸着法による界面設計と光電変換の向上

  大北 英生; 伊藤 紳三郎

  有機薄膜太陽電池の高効率化と耐久性向上,, pp. 190-202, 2009

  
• 共役高分子－フラーレン系有機太陽電池の界面設計と光電変換プロセスの 解明

  大北 英生; 伊藤 紳三郎

  有機薄膜太陽電池の最新技術II,, pp. 242-255, 2009

  
• 高分子薄膜太陽電池におけるフラーレンカチオンの生成

  大北英生; 山本俊介; GUO Jiamo; 伊藤紳三郎

  光化学討論会講演要旨集, 11 Sep. 2008

  
• 高分子薄膜太陽電池におけるフラーレン誘導体が担う正孔キャリアの生成

  山本俊介; GUO Jiamo; 大北英生; 伊藤紳三郎

  高分子学会予稿集(CD-ROM), 09 Sep. 2008

  
• 高分子薄膜太陽電池におけるフラーレン誘導体の両極輸送性の分光学的証明

  山本俊介; GUO Jiamo; 大北英生; 伊藤紳三郎

  高分子学会予稿集(CD-ROM), 08 May 2008

  
• 過渡吸収分光法による高分子薄膜太陽電池におけるフラーレン誘導体の両極輸送性に対する検証

  山本俊介; GUO Jiamo; 大北英生; 伊藤紳三郎

  光化学討論会講演要旨集, 21 Sep. 2007

  
• 有機薄膜太陽電池中でフラーレンはホールを輸送するか?

  大北英生; 山本俊介; GUO Jiamo; 伊藤紳三郎

  高分子学会予稿集(CD-ROM), 04 Sep. 2007

  
• 高感度過渡吸収分光法によるMDMO‐PPV/PCBM有機薄膜太陽電池中に生成した電荷キャリアの観測

  山本俊介; GUO Jiamo; 大北英生; 伊藤紳三郎

  高分子学会予稿集(CD-ROM), 10 May 2007

  
• マイクロ・フェムト秒過渡分光法による高分子薄膜太陽電池におけるキャリア生成および電荷再結合ダイナミクスの解明

  大北英生; GUO Jiamo; 山本俊介; 伊藤紳三郎

  高分子学会予稿集(CD-ROM), 10 May 2007

  
• Spatial Distribution of Electrons Ejected by Two-Photon Excitation

  OHKITA Hideo; ITO Shinzaburo

  Photochemistry, 01 Aug. 2000

  
• Photoionization and thermoluminescence in poly(alkyl methacrylate) films

  Masahide Yamamoto; Hideo Ohkita; Wataru Sakai; Akira Tsuchida

  Synthetic Metals

  
• Photocleavage mechanism of polyimides having cyclobutane rings

  Hideo Ohkita; Akira Tsuchida; Masahide Yamamoto; James A. Moore; Donald R. Gamble

  Macromolecular Chemistry and Physics

  
• Direct observation of the carbazole hole trap in polymer solid films by the charge-resonance band

  Hideo Ohkita; Yasuyuki Nomura; Akira Tsuchida; Masahide Yamamoto

  Chemical Physics Letters

  
• Charge Recombination via Electron Tunneling after Two-Photon Ionization of Dopant Chromophore in Poly(butyl methacrylate) Film at 20 K

  Hideo Ohkita; Wataru Sakai; Akira Tsuchida; Masahide Yamamoto

  Bulletin of the Chemical Society of Japan, 1997

  
• Charge recombination of electron-cation pairs formed in polymer solids at 20 K through two-photon ionization

  Hideo Ohkita; Wataru Sakai; Akira Tsuchida; Masahide Yamamoto

  Journal of Physical Chemistry B

  
• Charge recombination luminescence via the photoionization of a dopant chromophore in polymer solids

  Hideo Ohkita; Wataru Sakai; Akira Tsuchida; Masahide Yamamoto

  Macromolecules

  
• p-n接合界面の色素修飾による高分子太陽電池の光捕集効率の向上 (特集 光電変換効率をいかに上げるか?)

  大北 英生; 本田 哲士; 横家 星一郎

  日本写真学会誌,74 (6), pp. 267-271, Peer-reviewed

  Access this misc :

  

Books and Other Publications

• 物理化学要論

  大北 英生, Contributor, 2章

  学術図書出版, Jun. 2015, Not refereed

  
• Encyclopedia of Photochemistry

  OHKITA Hideo, Contributor, 電子移動と電荷再結合

  朝倉書店, Jun. 2014, Not refereed

  
• Organic Solar Cells

  OHKITA Hideo, Contributor, Chapter 5

  Springer, 2013, Not refereed

  
• Cutting-edge Research on Organic Thin-Film Solar Cells

  OHKITA Hideo, Contributor, 第5章第1項

  シーエムシー出版, Jul. 2012, Not refereed

  
• New Function and Properties based on Polymer-Light Interaction

  OHKITA Hideo, Contributor, 第9章 高分子太陽電池

  化学同人, Nov. 2011, Not refereed

  

Industrial Property Rights

• 特許5639783, 特開2011-238762, 特願2010-108574, 光電変換素子

  伊藤紳三郎; 大北英生; 辨天宏明; 三宅邦仁; 三谷明子

  
• 特開2014-197688, 特願2014-107373, 光電変換素子

  伊藤紳三郎; 大北英生; 辨天宏明; 三宅邦仁; 三谷明子

  
• 特開2014-103217, 特願2012-253558, 光電変換素子

  伊藤紳三郎; 大北英生; 辨天宏明; 加藤岳仁

  
• 特開2013-207259, 特願2012-78006, 光電変換素子

  伊藤紳三郎; 大北英生; 辨天宏明; 三宅邦仁

  
• 特開2013-207252, 特願2012-77839, 光電変換素子

  伊藤紳三郎; 大北英生; 辨天宏明; 三宅邦仁

  
• 特許5258037, 特開2010-67642, 特願2008-230045, 光電変換素子、その製造方法、及び太陽電池

  伊藤紳三郎; 大北英生; 竹下公也; 吉本尚起

  
• 特許5024979, 特開2006-156956, 特願2004-317552, 多層構造の有機薄膜を有する光電素子、その製造方法、及び太陽電池

  伊藤紳三郎; 大北英生

  
• 特許4824913, 特開2005-235794, 特願2004-39116, グラフト薄膜を用いた光電素子及び太陽電池

  伊藤紳三郎; 辻井敬亘; 大北英生

  
• 特許4643926, 特開2004-356626, 特願2003-129380, 交互積層構造を有する高分子薄膜、これを用いた光電素子、及び太陽電池

  伊藤紳三郎; 大北英生

  
• 特開2009-054936, 特願2007-222521, 光電変換素子、その製造方法、及び太陽電池

  伊藤紳三郎; 大北英生; 増田幸治

  
• 特開2008-097680, 特願2006-276203, 光ピックアップ装置及び光再生方法

  伊藤紳三郎; 大北英生; 辨天宏明; 長島賢治; 竹田亨

  
• 特開2008-097682, 特願2006-276246, 光記録媒体、光記録媒体の情報の記録方法及び再生方法

  伊藤紳三郎; 大北英生; 辨天宏明; 長島賢治; 竹田亨

  
• 特開2004-226950, 特願2003-163763, 表示媒体および情報の表示・消去方法

  伊藤紳三郎; 大北英生; 徳広淳; 小池正士; 横田千秋

  

Awards

• 06 Jun. 2024

  2023年度高分子学会賞
• 29 May 2003

  The Society of Polymer Science, Japan, Award for Encouragement of Research in Polymer Science
• 15 Aug. 2004

  The Chemical Society of Japan, The Best Article of the Month in the Bulletin of the Chemical Society of Japan
• 27 Sep. 2007

  The Japanese Photochemistry Association, JPA Young Scientist Award
• 17 Jun. 2009

  The Society of Polymer Science, Japan, Young Scientist Lecture Award
• 06 Sep. 2018

  The Japanese Photochemistry Association, The Japanese Photochemistry Association Award

External funds: Kakenhi

• Offset-less charge generation due to symmetry breaking in pi-conjugated molecular systems

  Grant-in-Aid for Scientific Research (A)

  Medium-sized Section 35:Polymers, organic materials, and related fields

  Kyoto University

  大北 英生

  From 05 Apr. 2021, To 31 Mar. 2026, Granted

  電荷生成;オフセットレス;エントロピー;エンタルピー;自発的対称性の破れ;結晶性共役高分子;非晶性共役高分子;界面電荷移動状態;ヘテロ接合界面;エネルギーカスケード;縮環系共役分子;一重項励起子;凝集状態

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21H04692/
• Spectroscopic Study on Charge Carrier Dynamics in Perovskite Solar Cells

  Grant-in-Aid for JSPS Fellows

  Basic Section 36020:Energy-related chemistry

  Kyoto University

  大北 英生

  From 29 Jul. 2020, To 31 Mar. 2022, Declined

  ペロブスカイト太陽電池;エージング;正孔輸送剤;酸化;HOMO準位;表面再結合;バルク再結合;パッシベーション

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20F20031/
• Improvement in Conductive Properties of Conjugated Polymer Blended in Insulating Polymer

  Grant-in-Aid for Challenging Research (Exploratory)

  Medium-sized Section 35:Polymers, organic materials, and related fields

  Kyoto University

  Hideo OHKITA

  From 28 Jun. 2019, To 31 Mar. 2021, Project Closed

  共役高分子;絶縁性高分子;結晶;非晶;相溶性;分子量;表面エネルギー;太陽電池;結晶性共役高分子;ブレンド膜;電荷輸送特性;分子量依存性;ブレンド;非晶性;結晶性;正孔輸送;移動度;電荷輸送;電流計測原子間力顕微鏡

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19K22217/
• Exploratory Study on Conjugated Polymers with Highly Efficient Singlet Fission

  Grant-in-Aid for Challenging Research (Exploratory)

  Kyoto University

  Hideo OHKITA

  From 30 Jun. 2017, To 31 Mar. 2019, Project Closed

  一重項分裂;共役高分子;J凝集;H凝集;分子内D-A;分子内Ｄ－Ａ;結晶性共役高分子;分子鎖内;分子鎖間;三重項励起子対;三重項励起子解離;励起子拡散定数;結晶;非晶;分子内電荷移動;三重項励起子;ポーラロン;結晶性

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17K19157/
• Development of polymer solar cells based on the science of conjugated polymers

  Grant-in-Aid for Scientific Research (B)

  Kyoto University

  Shinzaburo ITO

  From 01 Apr. 2014, To 31 Mar. 2017, Project Closed

  エネルギー変換;有機薄膜太陽電池;機能性高分子;共役高分子;高分子相分離;電荷分離;電荷再結合;相分離

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-26288060/
• Exciton Dynamics in Crystalline Domains of Conjugated Polymers

  Grant-in-Aid for Scientific Research (A)

  Kyoto University

  Hideo OHKITA

  From 01 Apr. 2014, To 31 Mar. 2019, Project Closed

  一重項励起子拡散;共役高分子;励起子相互作用;J凝集;H凝集;結晶性;励起子拡散;次元性;超放射;一重項分裂;結晶性共役高分子;結晶化度;一重項励起子;三重項励起子;分子内電荷移動;励起子拡散定数;励起子カップリング;振動緩和;非緩和励起子;ダイナミクス;フェルスター

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-26248033/
• Synthesis of Novel Macrocyclic Carbazole Derivatives and Their Application for Functional Materials

  Grant-in-Aid for Scientific Research (C)

  Osaka Kyoiku University

  Keita TANI

  From 01 Apr. 2010, To 31 Mar. 2013, Project Closed

  カルバゾール;カルバゾロファン;蛍光;面不斉;エキシマー;ドナー-アクセプター;円二色性スペクトル;シクロファン;ドナー;アミド結合;光学分割;CDスペクトル;キロプティカル特性;キラルカルバゾール誘導体;不斉

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22550033/
• Investigation of electronic properties of carbazole dimer and their application for novel photofunctional materials.

  Grant-in-Aid for Scientific Research (C)

  Osaka Kyoiku University

  Keita TANI

  From 01 Apr. 2007, To 31 Mar. 2009, Project Closed

  カルバゾール;カルバゾロファン;蛍光;りん光;エキシマー;ドナー-アクセプター;光誘起電子移動;電荷移動;カチオンラジカル二量体;渡環π-π相互作用;ドナー-アクセプター系;シクロファン;酸化還元電位;ドナーアクセプター

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19550040/
• 高分子ヘテロ接合場における電荷再結合

  Grant-in-Aid for Young Scientists (B)

  Kyoto University

  大北 英生

  From 01 Apr. 2006, To 31 Mar. 2008, Project Closed

  過渡吸収測定;ヘテロ接合;電荷再結合;高分子ブレンド膜;交互吸着膜;有機-無機ハイブリッド膜;トラップ;界面化学修飾;高分子ブレンド薄膜;べき乗則

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18750100/
• New developments in polymer science through polymer chain imaging : empirical foundation research using scanning near-field optical microscopy

  Grant-in-Aid for Scientific Research (S)

  Kyoto University

  Shinzaburo ITO

  From 01 Apr. 2006, To 31 Mar. 2011, Project Closed

  高分子構造;近接場光学;走査顕微鏡;蛍光法;単一分子鎖;高分子薄膜・表面;高分子薄膜;二次元空間;分子配向;蛍光分光法;走査型顕微鏡;分光法

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18105005/
• 高分子多次元構造における光・電子プロセスの解明

  Grant-in-Aid for Young Scientists (B)

  Kyoto University

  大北 英生

  From 01 Apr. 2004, To 31 Mar. 2006, Project Closed

  高密度グラフト膜;交互吸着膜;原子移動ラジカル重合;電気化学測定;ホール輸送;ヘテロ構造;光電流;化学修飾

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16750187/
• Studies on Polymer Structures and Functions in Nanometric Dimensions: Challenges to Ten Nano-meters Regions by Scanning Photon Microscopy

  Grant-in-Aid for Scientific Research (A)

  KYOTO UNIVERSITY

  Shinzaburo ITO

  From 01 Apr. 2003, To 31 Mar. 2006, Project Closed

  走査フォトン顕微鏡;近接場光学;高分子構造;ナノ光学;蛍光法;超薄膜;分光;表面・界面;単一高分子鎖;近接場光学顕微鏡;ナノテクノロジー;薄膜;スペクトロスコピー;単一分子;分光分析;10nm;ナノ構造, Scanning Photon Microscopy;Near-field Optics;Polymer Structure;Nano-optics;Fluorescence Probe Method;Ultra-thin Films;Spectroscopy;Surface and Interface

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15205016/
• 高分子系におけるダイマーカチオンの形成ダイナミクスと電荷共鳴安定化

  Grant-in-Aid for Encouragement of Young Scientists (A)

  Kyoto University

  大北 英生

  From 01 Apr. 2000, To 31 Mar. 2002, Project Closed

  1, n-ジナフチルアルカン;分子内ダイマーカチオン;電荷共鳴安定化;van't Hoffプロット;標準生成エンタルピー;反発エネルギー;ホール;電荷非局在化;α,ω-ジナフチルアルカン;閉環確率;Arrheniusプロット;活性化エネルギー

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12750797/
• Polymer Science from Single Chains Investigated by Scanning Photon Microscopy-Non-statistic Observation of Morphology and Molecular Assembly

  Grant-in-Aid for Scientific Research (A)

  Kyoto University

  Shinzaburo ITO

  From 01 Apr. 2000, To 31 Mar. 2003, Project Closed

  走査フォトン顕微鏡;高分子構造;近接場光学;超薄膜;単一分子;分光分析;相分離;ナノ構造;分子集合構造, Ultra-thin Films;Polymer;Two-dimensions;Fluorescence Probe;Spectroscopy;Surface;Molecular Mornhology;Molecular Motion

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12305061/
• 高分子鎖上におけるホール移動およびホールトラップ形成のダイナミクス

  Grant-in-Aid for Encouragement of Young Scientists (A)

  Kyoto University

  大北 英生

  From 01 Apr. 1998, To 31 Mar. 2000, Project Closed

  カルバゾール;二量体モデル化合物;過渡吸収測定;電荷共鳴吸収帯;ダイマーカチオンラジカル;エキシマー;鎖長効果;環化反応;二重体モデル化合物;閉環確率;アンチ型ダイマー

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10750650/
• Development of Multi-layered Polymer Thin Films Bearing Structural Polarization and Application as Photoinduced Optical Effect Materials

  Grant-in-Aid for Scientific Research (B).

  KYOTO UNIVERSITY

  Shinzaburo ITO

  From 01 Apr. 1998, To 31 Mar. 2001, Project Closed

  積層薄膜;高分子;ナノ構造;分極;光誘起光学効果;吸着;非線形色素;電荷移動;積層膜;積層薄, Multi-Layered Film;Polymer;Nanostructure;Polarization;Photoinduced Optical Effect;Adsorption;Non-linear Optics Dye;Charge Transfer

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10555330/
• Nonradiative Transition Beyond Energy-Gap Law in Fused-Ring pi-Conjugated Molecules

  Grant-in-Aid for Challenging Research (Exploratory)

  Medium-sized Section 35:Polymers, organic materials, and related fields

  Kyoto University

  大北 英生

  From 30 Jun. 2022, To 31 Mar. 2024, Granted

  縮環系共役分子;蛍光寿命;発光量子収率;輻射遷移速度;無輻射遷移速度;再配向エネルギー;エネルギーギャップ則;凝集状態;縮環系π共役分子;共役高分子;無輻射遷移;凝集構造

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22K19062/

External funds: others

• 高分子太陽電池の新発電原理の分子論的解明

  独立行政法人科学技術振興機構

  From 01 Oct. 2009, To 31 Mar. 2015

  大北英生

Education

Teaching subject(s)

• From 01 Apr. 2024, To 31 Mar. 2025

  Physical Chemistry III (Frontier Chemistry)

  7124, Fall, Faculty of Engineering, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Basic Physical Chemistry(quantum theory)

  N329, Spring, Institute for Liberal Arts and Sciences, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Polymer Structure and Function

  H613, Fall, Graduate School of Engineering, 1.5
• From 01 Apr. 2024, To 31 Mar. 2025

  Molecular Function and Composite-Assembly Function

  H404, Spring, Graduate School of Engineering, 1.5
• From 01 Apr. 2024, To 31 Mar. 2025

  Polymer Structure and Function, Adv.

  H654, Fall, Graduate School of Engineering, 1.5
• From 01 Apr. 2024, To 31 Mar. 2025

  Polymer Physical Properties

  D652, Spring, Graduate School of Engineering, 3
• From 01 Apr. 2023, To 31 Mar. 2024

  Physical Chemistry III (Frontier Chemistry)

  7124, Fall, Faculty of Engineering, 2
• From 01 Apr. 2023, To 31 Mar. 2024

  Basic Physical Chemistry(quantum theory)

  N329, Spring, Institute for Liberal Arts and Sciences, 2
• From 01 Apr. 2023, To 31 Mar. 2024

  Polymer Structure and Function, Adv.

  H654, Fall, Graduate School of Engineering, 1.5
• From 01 Apr. 2023, To 31 Mar. 2024

  Polymer Structure and Function

  H613, Fall, Graduate School of Engineering, 1.5
• From 01 Apr. 2023, To 31 Mar. 2024

  Molecular Function and Composite-Assembly Function

  H404, Spring, Graduate School of Engineering, 1.5
• From 01 Apr. 2022, To 31 Mar. 2023

  Polymer Structure and Function

  H613, Fall, Graduate School of Engineering, 1.5
• From 01 Apr. 2022, To 31 Mar. 2023

  Basic Physical Chemistry(quantum theory)

  N329, Spring, Institute for Liberal Arts and Sciences, 2
• From 01 Apr. 2022, To 31 Mar. 2023

  Frontier Chemistry (Frontier Chemistry)

  7127, Spring, Faculty of Engineering, 2
• From 01 Apr. 2022, To 31 Mar. 2023

  Molecular Function and Composite-Assembly Function

  H404, Spring, Graduate School of Engineering, 1.5
• From 01 Apr. 2022, To 31 Mar. 2023

  Physical Chemistry III (Frontier Chemistry)

  7124, Fall, Faculty of Engineering, 2
• From 01 Apr. 2022, To 31 Mar. 2023

  Polymer Structure and Function, Adv.

  H654, Fall, Graduate School of Engineering, 1.5
• From Apr. 2011, To Mar. 2012

  高分子化学基礎IＩ（創成化学）

  Spring, 工学部
• From Apr. 2012, To Mar. 2013

  Mathematical Description of Natural Phenomena

  Spring, 全学共通科目
• From Apr. 2012, To Mar. 2013

  Polymer Chemistry, Adv. 1

  Spring, 工学研究科
• From Apr. 2012, To Mar. 2013

  Polymer Structure and Function

  Spring, 工学研究科
• From Apr. 2013, To Mar. 2014

  Mathematical Description of Natural Phenomena

  Spring, 全学共通科目
• From Apr. 2014, To Mar. 2015

  Polymer Structure and Function

  Spring, 工学研究科
• From Apr. 2014, To Mar. 2015

  Polymer Chemistry, Adv. 1

  Spring, 工学研究科
• From Apr. 2014, To Mar. 2015

  Mathematical Description of Natural Phenomena

  Spring, 全学共通科目
• From Apr. 2014, To Mar. 2015

  Basic Physical Chemistry(quantum theory)

  Spring, 全学共通科目
• From Apr. 2015, To Mar. 2016

  Basic Physical Chemistry(quantum theory)

  Spring, 全学共通科目
• From Apr. 2015, To Mar. 2016

  Mathematical Description of Natural Phenomena

  Spring, 全学共通科目
• From Apr. 2016, To Mar. 2017

  Basic Physical Chemistry(quantum theory)

  Spring, 全学共通科目
• From Apr. 2016, To Mar. 2017

  Mathematical Description of Natural Phenomena

  Spring, 全学共通科目
• From Apr. 2016, To Mar. 2017

  Polymer Chemistry, Adv. 1

  Spring, 工学研究科
• From Apr. 2016, To Mar. 2017

  Polymer Structure and Function

  Fall, 工学研究科
• From Apr. 2017, To Mar. 2018

  Basic Physical Chemistry(quantum theory)

  Spring, 全学共通科目
• From Apr. 2017, To Mar. 2018

  Master's Thesis

  Year-long, 工学研究科
• From Apr. 2017, To Mar. 2018

  Advanced Seminar on Polymer Chemistry 1

  Spring, 工学研究科
• From Apr. 2017, To Mar. 2018

  Advanced Seminar on Polymer Chemistry 2

  Fall, 工学研究科
• From Apr. 2017, To Mar. 2018

  Polymer Chemistry Laboratory & Exercise

  Year-long, 工学研究科
• From Apr. 2017, To Mar. 2018

  Polymer Chemistry, Adv. 1

  Fall, 工学研究科
• From Apr. 2017, To Mar. 2018

  Polymer Structure and Function

  Fall, 工学研究科
• From Apr. 2018, To Mar. 2019

  Frontier Chemistry (Frontier Chemistry)

  Spring, 工学部
• From Apr. 2018, To Mar. 2019

  Basic Physical Chemistry(quantum theory)

  Spring, 全学共通科目
• From Apr. 2018, To Mar. 2019

  Physical Chemistry III (Frontier Chemistry)

  Fall, 工学部
• From Apr. 2018, To Mar. 2019

  Polymer Structure and Function

  Fall, 工学研究科
• From Apr. 2018, To Mar. 2019

  Polymer Structure and Function, Adv.

  Fall, 工学研究科
• From Apr. 2019, To Mar. 2020

  Basic Physical Chemistry(quantum theory)

  Spring, 全学共通科目
• From Apr. 2019, To Mar. 2020

  Physical Chemistry III (Frontier Chemistry)

  Fall, 工学部
• From Apr. 2019, To Mar. 2020

  Polymer Structure and Function

  Fall, 工学研究科
• From Apr. 2019, To Mar. 2020

  Polymer Structure and Function, Adv.

  Fall, 工学研究科
• From Apr. 2020, To Mar. 2021

  Molecular Function and Composite-Assembly Function

  Spring, 工学研究科
• From Apr. 2020, To Mar. 2021

  Basic Physical Chemistry(quantum theory)

  Spring, 全学共通科目
• From Apr. 2020, To Mar. 2021

  Physical Chemistry III (Frontier Chemistry)

  Fall, 工学部
• From Apr. 2020, To Mar. 2021

  Polymer Structure and Function

  Fall, 工学研究科
• From Apr. 2020, To Mar. 2021

  Polymer Structure and Function, Adv.

  Fall, 工学研究科
• From Apr. 2021, To Mar. 2022

  Molecular Function and Composite-Assembly Function

  Spring, 工学研究科
• From Apr. 2021, To Mar. 2022

  Basic Physical Chemistry(quantum theory)

  Spring, 全学共通科目
• From Apr. 2021, To Mar. 2022

  Physical Chemistry III (Frontier Chemistry)

  Fall, 工学部
• From Apr. 2021, To Mar. 2022

  Master's Thesis

  Year-long, 工学研究科
• From Apr. 2021, To Mar. 2022

  Advanced Seminar on Polymer Chemistry 1

  Spring, 工学研究科
• From Apr. 2021, To Mar. 2022

  Advanced Seminar on Polymer Chemistry 2

  Fall, 工学研究科
• From Apr. 2021, To Mar. 2022

  Polymer Chemistry Laboratory & Exercise

  Year-long, 工学研究科
• From Apr. 2021, To Mar. 2022

  Polymer Structure and Function

  Fall, 工学研究科
• From Apr. 2021, To Mar. 2022

  Polymer Structure and Function, Adv.

  Fall, 工学研究科
• From Apr. 2021, To Mar. 2022

  Polymer Science Seminor II

  Fall, 工学研究科
• From Apr. 2021, To Mar. 2022

  Polymer Science Seminor I

  Spring, 工学研究科

Participation in PhD Defense

• Creation of Luminescent Materials with Narrow Energy Gaps Based on Boron-Fused Azobenzene Complexes

  NAKAMURA MASASHI, Graduate School of Engineering, Sub-chief Examiner

  25 Mar. 2024
• Sequence-Controlled Copolymers from Tailored Pendant-Transformable Divinyl Monomers：Precise Control of Cyclopolymerization and Creation of Sequence-Oriented Properties

  Xu Xiaoyan, Graduate School of Engineering, Sub-chief Examiner

  25 Sep. 2023
• Design of Bulky and Transformable Monomers toward Sequence Control for Vinyl Polymers

  OH DONGYOUNG, Graduate School of Engineering, Sub-chief Examiner

  23 Mar. 2023
• Design of Functional Luminescent Materials Based on Electronic States of Carboranes

  OCHI JUNKI, Graduate School of Engineering, Sub-chief Examiner

  23 Jan. 2023

Student achievements: Awards

• Innovative PV 奨励賞

  Jeon Jihun, The Japan Photovoltaic Society, 31 Aug. 2023
• Student Award

  Momoko Urano, The 9th International Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies (EM-NANO2023), 07 Jun. 2023
• SPSJ AM (Annual Meeting) Poster Award

  Yuki Sato, The Society of Polymer Science, Japan, 27 May 2022
• SPSJ AM (Annual Meeting) Poster Award

  Rei Shirouchi, The Society of Polymer Science, Japan, 27 May 2022

Administration

School management (title, position)

• From 01 Feb. 2022, To 30 Jun. 2022

  戦略調整会議ガバナンス体制検討委員会 委員
• From 31 Jan. 2019, To 31 Mar. 2021

  教職教育委員会 委員
• From 01 Apr. 2019, To 31 Mar. 2020

  教職教育委員会教職科目連絡小委員会 委員
• From 01 Apr. 2019, To 31 Mar. 2020

  京都大学教職教育委員会教職科目連絡小委員会 委員
• From 28 Nov. 2018, To 31 Mar. 2019

  Kyoto iUP 予備教育達成度確認試験実施検討WG委員
• From 31 Jan. 2019, To 31 Mar. 2020

  教職教育委員会 委員

Faculty management (title, position)

• From 01 Apr. 2017, To 31 Mar. 2019

  工学研究科国際交流委員会　委員
• From 01 Apr. 2017, To 31 Mar. 2018

  高分子化学専攻長
• From 01 Apr. 2018, To 31 Mar. 2020

  工学部教育制度委員会　委員
• From 01 Apr. 2020, To 31 Mar. 2022

  工学研究科教育制度委員会　委員
• From 01 Apr. 2021, To 31 Mar. 2022

  高分子化学専攻長

Academic, Social Contribution

Committee Memberships

• From Sep. 2022, To Present

  Editorial Board Member, Nano Research Energy
• From Nov. 2021, To Present

  PV Session Program Committee Member, International Workshop on Active-Matrix Flatpanel Display and Devices
• From Oct. 2020, To Present

  学識委員, フィルム型太陽電池研究コンソーシアム
• From Oct. 2023, To Jun. 2025

  日本化学会代議員, 日本化学会
• From Apr. 2024, To Jan. 2025

  Co-Organizer, International Conference of Perovskite and Organic Photovoltaics and Optoelectronics 2025
• From Jul. 2023, To Nov. 2024

  第33回ポリマー材料フォーラム Bセッションオーガナイザー, 高分子学会
• From Apr. 2024, To Mar. 2026

  有機分子・バイオエレクトロニクス分科会常任幹事, 公益社団法人 応用物理学会
• From Jun. 2020, To May 2026

  Board Member of the Kansai Regional Chapter, The Societ of Polymer Science, Japan
• From Apr. 2021, To Mar. 2025

  -, The Society of Polymer Science, Japan
• From Nov. 2015, To Present

  -, -
• From Sep. 2017, To Present

  Program Committee Member, SPIE Organic, Hybrid, and Perovskite Photovoltaics

Social Contribution

• -

  Other

  -, From 01 Dec. 2020, To 30 Nov. 2021

  
• -

  Other

  -, From 01 May 2021, To 31 May 2021

  
• -

  Other

  -, From 01 Dec. 2019, To 30 Nov. 2020

  
• -

  Other

  -, From 14 Apr. 2020, To 08 May 2020

  
• -

  Other

  -, From 01 Dec. 2018, To 30 Nov. 2019

  
• -

  Other

  -, From 01 Dec. 2014, To 30 Nov. 2016

  
• -

  Other

  -, From 01 Oct. 2009, To 30 Sep. 2012