Ishii, Ryota(Graduate School of Engineering, Division of Electronic Science and Engineering) | Activity Database on Education and Research, Kyoto University

Ishii, Ryota

Graduate School of Engineering, Division of Electronic Science and Engineering Assistant Professor

Last Updated :2025/04/29

Basic Information

Faculty

Faculty of Engineering

Academic Degree

修士（工学）(京都大学)

博士（工学）(京都大学)

Academic Resume (Graduate Schools)

京都大学, 大学院工学研究科修士課程電子工学専攻, 修了

京都大学, 大学院工学研究科博士後期課程電子工学専攻, 修了

Academic Resume (Undergraduate School/Majors)

京都大学, 工学部電気電子工学科, 卒業

High School

High School
私立洛星高校

Research History

From Apr. 2014, To Present
Kyoto University, Graduate School of Engineering, Department of Electronic Science and Engineering, 助教

From May 2019, To Jun. 2019
モンペリエ大学シャルルクーロン研究所, 客員研究員

From Apr. 2013, To Mar. 2014
Kyoto University, Graduate School of Engineering, Department of Electronic Science and Engineering, 特別研究員

From Apr. 2010, To Mar. 2013
Kyoto University, Graduate School of Engineering

From Apr. 2008, To Mar. 2010
Kyoto University, Graduate School of Engineering

ID,URL

ORCID ID
0000-0002-1413-4849
J-Global ID
201401040627161182
Researcher number
60737047
External link
http://www.optomater.kuee.kyoto-u.ac.jp/index.html

researchmap URL

https://researchmap.jp/7000009365

Last Updated :2025/04/29

Research

Research Topics, Overview of the research

Research Topics
Investigation on the optical properties of widegap semiconductors

Research Interests

時空間分解分光

Ultra-widegap semiconductors

Near-field spectroscopy

deep-ultraviolet spectroscopy

optical properties of semiconductors

exciton

Research Areas

Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Electric/electronic material engineering, Study on electronic materials

Natural sciences, Magnetism, superconductivity, and strongly correlated systems, Optical properties of semiconductors

Nanotechnology/Materials, Crystal engineering, Widegap semiconductors

Papers

Spin Hall effect driven photocurrent in nonmagnetic single metals
Taiki Nishijima; Ryo Ohshima; Youichi Yanase; Ryota Ishii; Masashi Shiraishi; Yuichiro Ando
Physical Review B, 10 Apr. 2025, Peer-reviewed

Nanoscopic structural and optical investigations on blue InGaN single quantum wells serving as layers beneath efficient red active layers
Zhaozong Zhang; Ryota Ishii; Kanako Shojiki; Mitsuru Funato; Kazuhiro Ohkawa; Daisuke Iida; Yoichi Kawakami
Journal of Applied Physics, 03 Feb. 2025, Peer-reviewed
Access this paper :

励起長可変法を用いたHVPE窒化アルミニウム基板の光学利得評価
石井良太; 隅田長門; 人見達矢; 山本玲緒; 永島徹; 船戸充; 川上養一
Nov. 2024, Lead author, Corresponding author

199 nm vacuum-ultraviolet second harmonic generation from SrB₄O₇ vertical microcavity pumped with picosecond laser
Tomoaki Nambu; Masashi YOSHIMURA; Yusuke Mori; Yasufumi FUJIWARA; Ryota Ishii; Yoichi KAWAKAMI; Masahiro Uemukai; Tomoyuki TANIKAWA; Ryuji KATAYAMA
Applied Physics Express, 01 Aug. 2024

Correlative Micro‐Photoluminescence Study on Hybrid Quantum‐Well InGaN Red Light‐Emitting Diodes
Zhaozong Zhang; Ryota Ishii; Kanako Shojiki; Mitsuru Funato; Daisuke Iida; Kazuhiro Ohkawa; Yoichi Kawakami
physica status solidi (b), 25 Apr. 2024, Peer-reviewed

Radiative and Nonradiative Recombination Processes in AlGaN Quantum Wells on Epitaxially Laterally Overgrown AlN/Sapphire from 10 to 500 K
Ryota Ishii; Shiki Tanaka; Norman Susilo; Tim Wernicke; Michael Kneissl; Mitsuru Funato; Yoichi Kawakami
physica status solidi (b), 22 Mar. 2024, Peer-reviewed, Lead author, Corresponding author

Deep‐Ultraviolet Luminescence Properties of AlN
Ryota Ishii; Akira Yoshikawa; Mitsuru Funato; Yoichi Kawakami
physica status solidi (RRL) – Rapid Research Letters, 17 Mar. 2024, Peer-reviewed, Invited, Lead author, Corresponding author

Revisiting the substitutional Mg acceptor binding energy of AlN
Ryota Ishii; Akira Yoshikawa; Mitsuru Funato; Yoichi Kawakami
Physical Review B, 14 Jul. 2023, Peer-reviewed, Lead author, Corresponding author

Frontiers of Nitride Semiconductor Research FOREWORD
Shigefusa F. Chichibu; Yoshinao Kumagai; Kazunobu Kojima; Momoko Deura; Toru Akiyama; Munetaka Arita; Hiroshi Fujioka; Yasufumi Fujiwara; Naoki Hara; Tamotsu Hashizume; Hideki Hirayama; Mark Holmes; Yoshio Honda; Masataka Imura; Ryota Ishii; Yoshihiro Ishitani; Motoaki Iwaya; Satoshi Kamiyama; Yoshihiro Kangawa; Ryuji Katayama; Yoichi Kawakami; Takahiro Kawamura; Atsushi Kobayashi; Masaaki Kuzuhara; Koh Matsumoto; Yusuke Mori; Takashi Mukai; Hisashi Murakami; Hideaki Murotani; Satoshi Nakazawa; Narihito Okada; Yoshiki Saito; Akira Sakai; Hiroto Sekiguchi; Koji Shiozaki; Kanako Shojiki; Jun Suda; Tetsuya Takeuchi; Tomoyuki Tanikawa; Jun Tatebayashi; Shigetaka Tomiya; Yoichi Yamada
JAPANESE JOURNAL OF APPLIED PHYSICS, Jun. 2019, Peer-reviewed

Picosecond-laser-excited photoluminescence study of AlGaN quantum wells on epitaxially laterally overgrown AlN/sapphire under selective and non-selective excitation conditions
Shiki Tanaka; Ryota Ishii; Norman Susilo; Tim Wernicke; Michael Kneissl; Mitsuru Funato; Yoichi Kawakami
Japanese Journal of Applied Physics, 01 Nov. 2022, Peer-reviewed

Stimulated emission mechanism of aluminum nitride
Ryota Ishii; Toru Nagashima; Reo Yamamoto; Tatsuya Hitomi; Mitsuru Funato; Yoichi Kawakami
Physical Review B, May 2022, Peer-reviewed, Lead author, Corresponding author

DUV coherent light emission from ultracompact microcavity wavelength conversion device
Tomoaki Nambu; Taketo Yano; Soshi Umeda; Naoki Yokoyama; Hiroto Honda; Yasunori Tanaka; Yutaka Maegaki; Yusuke Mori; Masashi Yoshimura; Shuhei Kobayashi; Shuhei Ichikawa; Yasufumi Fujiwara; Ryota Ishii; Yoichi Kawakami; Masahiro Uemukai; Tomoyuki Tanikawa; Ryuji Katayama
Optics Express, Mar. 2022, Peer-reviewed

Structural and emission improvement of cyan-emitting InGaN quantum wells by introducing a large substrate misorientation angle
A. Kafar; A. Sakaki; R. Ishii; K. Shojiki; S. Stanczyk; K. Gibasiewicz; G. Staszczak; L. Marona; D. Schiavon; S. Grzanka; S. Krukowski; T. Suski; P. Perlin; M. Funato; Y. Kawakami
Optical Materials Express, 01 Jan. 2022, Peer-reviewed

Impact of the positive electron–hole exchange interaction constant on the binding energy of neutral donor bound excitons in AlN
Ryota Ishii; Akira Yoshikawa; Hirotsugu Kobayashi; Mitsuru Funato; Yoichi Kawakami
Japanese Journal of Applied Physics, 01 Aug. 2021, Peer-reviewed, Lead author, Corresponding author

Microscopic origin of thermal droop in blue-emitting InGaN/GaN quantum wells studied by temperature-dependent microphotoluminescence spectroscopy
Ryota Ishii; Yuji Koyama; Mitsuru Funato; Yoichi Kawakami
Optics Express, 19 Jul. 2021, Peer-reviewed, Lead author, Corresponding author

Bias-dependent time-resolved photoluminescence spectroscopy on 265 nm AlGaN-based LEDs on AlN substrates
Ryota Ishii; Akira Yoshikawa; Kazuhiro Nagase; Mitsuru Funato; Yoichi Kawakami
Japanese Journal of Applied Physics, 21 Jan. 2021, Peer-reviewed, Lead author, Corresponding author

Influence of substrate misorientation on emission and waveguiding properties of blue (In,Al,Ga)N laser-like structure studied by synchrotron radiation microbeam X-ray diffraction
Anna Kafar; Atsushi Sakaki; Ryota Ishii; Szymon Stanczyk; Krzysztof Gibasiewicz; Yoshinobu Matsuda; Dario Schiavon; Szymon Grzanka; Tadek Suski; Piotr Perlin; Mitsuru Funato; Yoichi Kawakami
Photonics Research, 05 Jan. 2021, Peer-reviewed

The 2020 UV emitter roadmap
Hiroshi Amano; Ramón Collazo; Carlo De Santi; Sven Einfeldt; Mitsuru Funato; Johannes Glaab; Sylvia Hagedorn; Akira Hirano; Hideki Hirayama; Ryota Ishii; Yukio Kashima; Yoichi Kawakami; Ronny Kirste; Michael Kneissl; Robert Martin; Frank Mehnke; Matteo Meneghini; Abdallah Ougazzaden; Peter J Parbrook; Siddharth Rajan; Pramod Reddy; Friedhard Römer; Jan Ruschel; Biplab Sarkar; Ferdinand Scholz; Leo J Schowalter; Philip Shields; Zlatko Sitar; Luca Sulmoni; Tao Wang; Tim Wernicke; Markus Weyers; Bernd Witzigmann; Yuh-Renn Wu; Thomas Wunderer; Yuewei Zhang
Journal of Physics D: Applied Physics, 09 Dec. 2020, Peer-reviewed

Temperature-dependent electroluminescence study on 265-nm AlGaN-based deep-ultraviolet light-emitting diodes grown on AlN substrates
Ryota Ishii; Akira Yoshikawa; Kazuhiro Nagase; Mitsuru Funato; Yoichi Kawakami
AIP Advances, 01 Dec. 2020, Peer-reviewed, Lead author, Corresponding author

265 -nm AlGaN AlGaN-based LEDs grown on AlN substrates studied by electroluminescence and photoluminescence methods
石井良太; 吉川陽; 永瀬和宏; 船戸充; 川上養一
IEICE technical report, Nov. 2020, Lead author

Long-range electron-hole exchange interaction in aluminum nitride
Ryota Ishii; Mitsuru Funato; Yoichi Kawakami
Physical Review B, 12 Oct. 2020, Peer-reviewed, Lead author, Corresponding author

265 nm AlGaN-based deep-ultraviolet light-emitting diodes grown on AlN substrates studied by photoluminescence spectroscopy under ideal pulsed selective and non-selective excitation conditions
Ryota Ishii; Akira Yoshikawa; Kazuhiro Nagase; Mitsuru Funato; Yoichi Kawakami
Applied Physics Express, 01 Oct. 2020, Peer-reviewed, Lead author, Corresponding author

Achromatic Deep Ultraviolet Lens Using Novel Optical Materials
Yuki Minami; Marilou Cadatal-Raduban; Koki Kuroda; Keito Shinohara; Youwei Lai; Kohei Yamanoi; Nobuhiko Sarukura; Toshihiko Shimizu; Ryota Ishii; Yoichi Kawakami; Nobuo Kabasawa; Takashi Amano; Kosuke Kiyohara; Motosuke Kiyohara
physica status solidi (b), Aug. 2020, Peer-reviewed

Above 25 nm emission wavelength shift in blue-violet InGaN quantum wells induced by GaN substrate misorientation profiling: towards broad-band superluminescent diodes
A. Kafar; R. Ishii; K. Gibasiewicz; Y. Matsuda; S. Stanczyk; D. Schiavon; S. Grzanka; M. Tano; A. Sakaki; T. Suski; P. Perlin; M. Funato; Y. Kawakami
Optics Express, 20 Jul. 2020, Peer-reviewed

Direct detection of rare earth ion distributions in gallium nitride and its influence on growth morphology
B. Mitchell; D. Timmerman; W. Zhu; J. Y. Lin; H. X. Jiang; J. Poplawsky; R. Ishii; Y. Kawakami; V. Dierolf; J. Tatebayashi; S. Ichikawa; Y. Fujiwara
Journal of Applied Physics, 07 Jan. 2020, Peer-reviewed

Deep-ultraviolet near band-edge emissions from nano-polycrystalline diamond
Ryota Ishii; Rei Fukuta; Fumitaro Ishikawa; Masafumi Matsushita; Hiroaki Ohfuji; Toru Shinmei; Tetsuo Irifune; Mitsuru Funato; Yoichi Kawakami
High Pressure Research, Dec. 2019, Peer-reviewed

Impact of face-to-face annealed sputtered AlN on the optical properties of AlGaN multiple quantum wells
Kanako Shojiki; Ryota Ishii; Kenjiro Uesugi; Mitsuru Funato; Yoichi Kawakami; Hideto Miyake
AIP ADVANCES, Dec. 2019, Peer-reviewed

Intrinsic exciton transitions of isotopically purified 13C studied by photoluminescence and transmission spectroscopy
Ryota Ishii; Shinichi Shikata; Tokuyuki Teraji; Hisao Kanda; Hideyuki Watanabe; Mitsuru Funato; Yoichi Kawakami
Japanese Jounral of Applied Physics, Dec. 2019, Peer-reviewed

Pushing the limits of deep-ultraviolet scanning near-field optical microscopy
Ryota Ishii; Mitsuru Funato; Yoichi Kawakami
APL Photonics, Jun. 2019, Peer-reviewed, Invited

Isotopic effects on phonons and excitons in diamond studied by deep-ultraviolet continuous-wave photoluminescence spectroscopy
Ryota Ishii; Shinichi Shikata; Tokuyuki Teraji; Hisao Kanda; Hideyuki Watanabe; Mitsuru Funato; Yoichi Kawakami
Japanese Journal of Applied Physics, Dec. 2018, Peer-reviewed

<大学の研究・動向>近接場光学顕微鏡の開発 : 光材料物性解明のためのツール開拓を目指して
川上養一; 船戸充; 石井良太
Cue : 京都大学電気関係教室技術情報誌, Jan. 2018
Access this paper :

Multi-wavelength excited Raman scattering spectroscopy for InGaN single layers
石戸亮祐; 石井良太; 船戸充; 川上養一
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, Jan. 2015

Effects of strong electron-hole exchange and exciton-phonon interactions on the exciton binding energy of aluminum nitride
Ryota Ishii; Mitsuru Funato; Yoichi Kawakami
JAPANESE JOURNAL OF APPLIED PHYSICS, Sep. 2014, Peer-reviewed

(Al, Ga)N系半導体の物性予測に向けたGaNとAlNの物性定数の同定(<特集>固体紫外光源を目指した窒化物半導体結晶成長の最前線)
石井良太; 船戸充; 川上養一
日本結晶成長学会誌, Jan. 2014, Peer-reviewed

Complete set of deformation potentials for AlN determined by reflectance spectroscopy under uniaxial stress
Ryota Ishii; Akio Kaneta; Mitsuru Funato; Yoichi Kawakami
PHYSICAL REVIEW B, Jun. 2013, Peer-reviewed
Access this paper :

Optical Properties of Highly Strained AlN Coherently Grown on 6H-SiC(0001)
Mitsuaki Kaneko; Hironori Okumura; Ryota Ishii; Mitsuru Funato; Yoichi Kawakami; Tsunenobu Kimoto; Jun Suda
APPLIED PHYSICS EXPRESS, Jun. 2013, Peer-reviewed

Huge electron-hole exchange interaction in aluminum nitride
Ryota Ishii; Mitsuru Funato; Yoichi Kawakami
PHYSICAL REVIEW B, Apr. 2013, Peer-reviewed
Access this paper :

Strong optical polarization in nonpolar (1(1)over-bar00) AlxGa1-xN/AlN quantum wells
Mitsuru Funato; Kazuhisa Matsuda; Ryan G. Banal; Ryota Ishii; Yoichi Kawakami
PHYSICAL REVIEW B, Jan. 2013, Peer-reviewed
Access this paper :

Homoepitaxy and Photoluminescence Properties of (0001) AlN
Mitsuru Funato; Kazuhisa Matsuda; Ryan G. Banal; Ryota Ishii; Yoichi Kawakami
APPLIED PHYSICS EXPRESS, Aug. 2012, Peer-reviewed

Strain-Induced Effects on the Electronic Band Structure of AlN
ISHII Ryota; KANETA Akio; BANAL Ryan; FUNATO Mitsuru; KAWAKAMI Yoichi
電子情報通信学会技術研究報告. CPM, 電子部品・材料, Nov. 2011

Strain-Induced Effects on the Electronic Band Structures in GaN/AlGaN Quantum Wells: Impact of Breakdown of the Quasicubic Approximation in GaN
Ryota Ishii; Akio Kaneta; Mitsuru Funato; Yoichi Kawakami
JAPANESE JOURNAL OF APPLIED PHYSICS, Jun. 2010, Peer-reviewed
Access this paper :

All deformation potentials in GaN determined by reflectance spectroscopy under uniaxial stress: Definite breakdown of the quasicubic approximation
Ryota Ishii; Akio Kaneta; Mitsuru Funato; Yoichi Kawakami; Atsushi A. Yamaguchi
PHYSICAL REVIEW B, Apr. 2010, Peer-reviewed
Access this paper :

Misc.

深紫外CW・時間分解PL分光法による¹²C/¹³C超格子の光学特性評価
石井良太; 鹿田真一; 寺地徳之; 神田久生; 渡邊幸志; 船戸充; 川上養一
応用物理学会春季学術講演会講演予稿集(CD-ROM), 2018

深紫外CWレーザにより生成したダイヤモンド結晶中の極低温励起子に対する同位体効果
石井良太; 鹿田真一; 寺地徳之; 神田久生; 渡邊幸志; 船戸充; 川上養一
応用物理学会秋季学術講演会講演予稿集(CD-ROM), 2017

Determination of Material Parameters in GaN and AlN for Predicting the Properties of AlGaN-based Semiconductors
Ishii Ryota; Funato Mitsuru; Kawakami Yoichi
Journal of the Japanese Association of Crystal Growth, 2014

Presentations

Fundamental electronic and optical properties of AlN as an ultrawide bandgap material
Ryota Ishii; Mitsuru Funato; Yoichi Kawakami
2025 MRS Spring Meeting & Exhibit, Invited

窒化アルミニウムにおける深紫外誘導放出機構と光学利得
石井良太; 船戸充; 川上養一
レーザー学会学術講演会第45回年次大会, 21 Jan. 2025, Invited

Optoelectronic properties of ultrawide-band-gap semiconductors probed by deep-ultraviolet spectroscopy
Ryota Ishii; Mitsuru Funato; Yoichi Kawakami
SPIE Optics + Photonics 2024, Invited

超ワイドギャップ半導体光物性評価のための深紫外分光技術の現状と展望
石井良太; 船戸充; 川上養一
ワイドギャップ半導体学会, 01 Mar. 2024, Invited

Fundamental optical properties of AlN revealed by deep-ultraviolet spectroscopy
Ryota Ishii
International Conference on Nitride Semiconductors 14, Nov. 2023, Invited

Spontaneous and stimulated emission physics of aluminum nitride
Ryota Ishii
SPIE PHOTONICS WEST 2023, 31 Jan. 2023, Invited

Luminescence spectroscopies on 265-nm AlGaN DUV LEDs and AlN films grown on AlN substrates
Ryota Ishii; Mitsuru Funato; Yoichi Kawakami
SPIE PHOTONICS WEST 2022, 22 Feb. 2022, Invited

Recent progress in deep-ultraviolet scanning near-field optical microscope: a tool visualizing the luminescence properties of Al-rich AlGaN active layers
Ryota Ishii
SPIE PHOTONICS WEST 2021, 08 Mar. 2021, Invited

Exciton fine structure of aluminum nitride
Ryota Ishii
SPIE PHOTONICS WEST 2020, 04 Feb. 2020, Invited

ダイヤモンドの励起子光物性とその深紫外光応用
石井良太
超高圧材料科学セミナー「高温・高圧合成ダイヤモンドの電子材料応用の可能性」, 23 Dec. 2019, Invited

窒化物半導体光物性
石井良太
第38回電子材料シンポジウム, 08 Oct. 2019, Invited

ダイヤモンドを中心としたワイドギャップ半導体の深紫外光物性と同位体効果
石井良太
ニューダイヤモンドフォーラム第2回研究会, 30 Sep. 2019, Invited

深紫外近接場光学顕微鏡の開発とAlリッチAlGaN系特異構造のPLマッピング評価
石井良太
第66回応用物理学会春季学術講演会, 09 Mar. 2019, Invited

Development of a deep-ultraviolet scanning nearfield optical microscope for nano-spectroscopic characterizations of AlxGa1-xN (x: 0∼1) active layers
Ryota Ishii
IWN2018, 11 Nov. 2018, Invited

Optical properties of excitons in widegap semiconductors
Ryota Ishii
ISPESE 2017, 10 Mar. 2017, Invited

GaNとAlNの物性定数の同定と(Al,Ga)N系半導体の物性予測
石井良太
日本結晶成長学会, 09 May 2016, Invited

Books and Other Publications

光と物質の量子相互作用ハンドブック
荒川, 泰彦; 岩本, 敏; 金光, 義彦; 島野, 亮; 高原, 淳一; 立間, 徹, Contributor, 窒化物半導体
エヌ・ティー・エス, Mar. 2023
Find Kyoto University's collection of books :

Awards

Aug. 2023
2023 堀場雅夫賞
石井良太

Mar. 2022
第2回先端ナノミクス若手研究者交流会，最優秀ポスター賞
石井良太

Nov. 2019
第8回エヌエフ基金研究開発奨励賞(優秀賞)

2014
日本結晶成長学会, 第8回窒化物半導体結晶成長講演会，研究奨励賞

2012
第31回電子材料シンポジウム, EMS賞

2010
The 37th International Symposium on Compound Semiconductors, Student Award

2010
応用物理学会, 応用物理学会関係連合講演会講演奨励賞

External funds: Kakenhi

Visible, long wavelength LEDs based on In-rich InGaN on ScAlMgO4 substrates
Grant-in-Aid for Scientific Research (A)
Medium-sized Section 30:Applied physics and engineering and related fields
Kyoto University
船戸充
From 05 Apr. 2021, To 31 Mar. 2025, Granted
結晶成長;InリッチInGaN;ScAlMgO4;可視長波長LED;高効率化
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21H04661/

Light emitting synthesizer : aiming to create the ultimate lighting devices
Grant-in-Aid for Specially Promoted Research
Science and Engineering
Kyoto University
川上養一
From 30 Jul. 2020, To 31 Mar. 2025, Granted
発光シンセサイザー;半導体3次元構造;次世代照明;深紫外フォトニクス;光空間無線通信;発光高効率化
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20H05622/

ScAlMgO4基板上へのInリッチInGaN系LEDの実現
Grant-in-Aid for Scientific Research (A)
Medium-sized Section 30:Applied physics and engineering and related fields
Kyoto University
川上養一
From 01 Apr. 2020, To 31 Mar. 2021, Discontinued
InリッチInGaN;ScAlMgO4基板;発光ダイオード;高効率化
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20H00351/

Creation of ultrawide-bandgap-semiconductor exciton-engineering using deep-ultraviolet time and spatially resolved spectroscopies under extreme environments
Grant-in-Aid for Scientific Research (B)
Basic Section 30010:Crystal engineering-related
Kyoto University
Ryota Ishii
From 01 Apr. 2019, To 31 Mar. 2022, Project Closed
フォトルミネッセンス;エレクトロルミネッセンス;窒化物半導体;ダイヤモンド;励起子;深紫外分光;近接場分光;極限環境下分光;束縛励起子;AlGaN;量子井戸;時間分解分光;超ワイドギャップ半導体;極限環境;顕微分光
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19H02615/

Optical properties of super-widegap semiconductors studied by time and spatially resolved deep-ultraviolet spectroscopy
Grant-in-Aid for Young Scientists (A)
Kyoto University
Ryota Ishii
From 01 Apr. 2017, To 31 Mar. 2020, Project Closed
深紫外分光;近接場分光;励起子;ダイヤモンド;窒化物半導体;時間分解分光;ワイドギャップ半導体;同位体効果;フォトルミネッセンス;フォノン;超ワイドギャップ半導体;時空間分解分光
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17H04810/

近接場分光（SNOM）による特異構造の発光機構解明と制御
Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
Science and Engineering
Kyoto University
川上養一
From 30 Jun. 2016, To 31 Mar. 2021, Discontinued
近接場光学顕微鏡;顕微分光;窒化物半導体;特異構造;近接場分光;発光機構解明;発光制御;深紫外分光;窒化物特異構造;光物性評価;多波長発光素子;深紫外フォトニクス
https://kaken.nii.ac.jp/grant/KAKENHI-PLANNED-16H06426/

Physical properties of isotope diamond looking for further light element materials
Grant-in-Aid for Scientific Research (B)
Kwansei Gakuin University
Shinichi Shikata
From 01 Apr. 2016, To 31 Mar. 2019, Project Closed
同位体;軽元素;電気・電子;ダイヤモンド;電子・電気材料;半導体物性;光物性
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16H03861/

Optical properties of (Al,In,Ga)N-based semiconductors studied by spectroscopy under various perturbation fields
Grant-in-Aid for Young Scientists (B)
Kyoto University
Ryota Ishii
From 01 Apr. 2015, To 31 Mar. 2017, Project Closed
摂動下分光法;窒化物半導体;励起子;光物性;再結合過程;緩和過程;発光ダイオード;レーザダイオード;ダイヤモンド;一軸性応力
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15K17460/

Achievement of Tailor-made Lighting Sources by the Control of Nanoscopic Carrier Localization in Nitride Semiconductors
Grant-in-Aid for Scientific Research (S)
Kyoto University
Yoichi Kawakami
From 29 May 2015, To 31 Mar. 2020, Project Closed
新機能発光デバイス;半導体3次元構造;局在光物性;多波長発光光源;窒化物半導体;プラズモニクス;3次元構造;ナノ局在;多波長発光;テーラーメイド光源;多波長発光制御;ナノ局在物性;近接場分光
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15H05732/

深紫外近接場分光による超ワイドギャップ半導体の物性解明
Grant-in-Aid for Scientific Research (A)
Kyoto University
川上養一
From 01 Apr. 2015, To 31 Mar. 2016, Discontinued
近接場光学;深紫外分光;超ワイドギャップ半導体
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15H02013/

磁場下偏光反射・偏光フォトルミネッセンス測定によるAlNの励起子状態の解明
Grant-in-Aid for Research Activity Start-up
Kyoto University
石井良太
From 29 Aug. 2014, To 31 Mar. 2015, Project Closed
ワイドギャップ半導体;励起子;光物性;結晶工学;窒化物半導体;摂動下分光法
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-26886007/

超ワイドギャップ半導体の両極性電気伝導発現に向けた物性の解明と制御
Grant-in-Aid for Scientific Research (B)
Basic Section 30010:Crystal engineering-related
Kyoto University
石井良太
From 01 Apr. 2023, To 31 Mar. 2026, Granted
超ワイドギャップ半導体;両極性電気伝導;励起子;深紫外分光;磁場下分光
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23H01867/

超ワイドギャップ半導体の両極性電気伝導発現に向けた物性の解明と制御
Grant-in-Aid for Scientific Research (B)
Basic Section 30010:Crystal engineering-related
Kyoto University
石井良太
From 01 Apr. 2023, To 31 Mar. 2026, Granted
超ワイドギャップ半導体;励起子;深紫外分光;フォトルミネッセンス;両極性電気伝導;磁場下分光
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23K26560/

Last Updated :2025/04/29

Education

Teaching subject(s)

From 01 Apr. 2024, To 31 Mar. 2025
Advanced Practice of Electrical and Electronic Engineering
6202, Fall, Faculty of Engineering, 2

From 01 Apr. 2023, To 31 Mar. 2024
Advanced Practice of Electrical and Electronic Engineering
6202, Fall, Faculty of Engineering, 2

From 01 Apr. 2022, To 31 Mar. 2023
Advanced Practice of Electrical and Electronic Engineering
6202, Fall, Faculty of Engineering, 2

From Apr. 2017, To Mar. 2018
Advanced Practice of Electrical and Electronic Engineering
Fall, 工学部

From Apr. 2018, To Mar. 2019
Advanced Practice of Electrical and Electronic Engineering
Fall, 工学部

From Apr. 2019, To Mar. 2020
Advanced Practice of Electrical and Electronic Engineering
Fall, 工学部

From Apr. 2020, To Mar. 2021
Advanced Practice of Electrical and Electronic Engineering
Fall, 工学部

From Apr. 2021, To Mar. 2022
Advanced Practice of Electrical and Electronic Engineering
Fall, 工学部

ページ上部へ戻る

Search for faculty members

Ishii, Ryota

Basic Information

Faculty

Academic Degree

Academic Resume (Graduate Schools)

Academic Resume (Undergraduate School/Majors)

High School

High School

Research History

ID,URL

ORCID ID

J-Global ID

Researcher number

External link

researchmap URL

Research

Research Topics, Overview of the research

Research Topics

Research Interests

Research Areas

Papers

Misc.

Presentations

Books and Other Publications

Awards

External funds: Kakenhi

Education

Teaching subject(s)

Academic, Social Contribution

Committee Memberships