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Ohkita, Hideo

Graduate School of Engineering, Division of Polymer Chemistry Professor

Ohkita, Hideo
list
    Last Updated :2024/07/15

    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

    researchmap URL

    list
      Last Updated :2024/07/15

      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

      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • Charge Traps in Lead-Halide Perovskites with Different Grain Sizes
        Hyung Do Kim; Hideo Ohkita
        JAPANESE JOURNAL OF APPLIED PHYSICS, Jul. 2018, Peer-reviewed
      • 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
      • 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
      • 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
      • 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
      • Potential Improvement in Fill Factor of Lead-Halide Perovskite Solar Cells
        Hyung Do Kim; Hideo Ohkita
        SOLAR RRL, May 2017, Peer-reviewed
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • Efficient Exciton Harvesting through Long-Range Energy Transfer
        Yanbin Wang; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito
        CHEMPHYSCHEM, Apr. 2015, Peer-reviewed
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • Multi-colored dye sensitization of polymer/fullerene bulk heterojunction solar cells
        Satoshi Honda; Hideo Ohkita; Hiroaki Benten; Shinzaburo Ito
        CHEMICAL COMMUNICATIONS, 2010, Peer-reviewed
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • Spatial distribution and stabilization of electrons ejected by two-photon ionization of aromatic molecules in polymer solids
        H Ohkita
        KOBUNSHI RONBUNSHU, 2004
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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.

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      • 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
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        日本画像学会誌, 2022, Invited
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        日本化学繊維研究所講演集, Mar. 2002
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        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
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        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
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        高分子学会予稿集(CD-ROM), 10 May 2016
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        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
      • 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)
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        日本化学繊維研究所講演集 Annual report of the Research Institute for Chemical Fibers, Japan, 2014
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        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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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

      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
      list
        Last Updated :2024/07/15

        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
        list
          Last Updated :2024/07/15

          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
          list
            Last Updated :2024/07/15

            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

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