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J-GLOBAL ID：200901004411969707   Update date: Apr. 24, 2026

Yaguchi Hiroyuki

ヤグチ ヒロユキ | Yaguchi Hiroyuki
Affiliation and department：
Saitama University Graduate School of Science and Engineering, Graduate School of Science and Engineering

About Saitama University Graduate School of Science and Engineering, Graduate School of Science and Engineering


Job title： Professor
Homepage URL  (1)： http://opt.eeap.saitama-u.ac.jp/
Research field  (4)： Electric/electronic material engineering ,  Crystal engineering ,  Applied materials ,  Semiconductors, optical and atomic physics
Research keywords  (5)： 光エレクトロニクスデバイス ,  エピタキシャル成長 ,  分子線エピタキシー ,  光エレクトロニクス ,  光物性
Research theme for competitive and other funds  (26)：
  • 2024 - 2027 Improvement of the efficiency of photovoltaic cells using two-step optical absorption through band tail states
  • 2019 - 2022 Development of High Efficiency Photovoltaic Cells Using Electron Localized States in Dilute Nitride Semiconductors
  • 2018 - 2021 Characterization of defect levels in UV-LEDs by below-gap excitation light under operating condition
  • 2014 - 2017 Study on the Behavior of Defects in Dilute Nitride Semiconductors and Improvement of Device Reliability
  • 2013 - 2017 Advanced research on semiconductor optical device materials by controlling phonon transport under non-thermal equilibrium state
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Papers (232)：
  • Taiga Kirihara, M. Ajmal Khan, M. Nawaz Sharif, Yuya Nagata, Amina Yasin, Hiroyuki Yaguchi, Hideki Hirayama. 225 nm far-UVC LEDs enabled directly on c-sapphire by tailored AlN molar fraction in n-AlGaN layers. Journal of Applied Physics. 2025. 138. 17. 174501-1-174501-6
  • Zamil Sultan, Shuhei Yagi, Kengo Takamiya, Hiroyuki Yaguchi. Study on real-time photoluminescence intensity change of In y Ga1- y As1- x N x alloys by CW-laser irradiation. AIP Advances. 2025. 15. 11. 115103-1-115103-10
  • Daisuke Kubota, Ryuzi Katoh, Hiroyuki Yaguchi, Takurou N. Murakami, Naoyuki Nishimura. Engineering of Volatile Cations in Tetrafluoroborate-Based Spontaneous Heterointerface Modulators for Perovskite Solar Cells. ACS Applied Materials & Interfaces. 2025. 17. 44. 60614-60623
  • Md Mamun Or Rashid, Kyoko Munakata, Shuhei Yagi, Hiroyuki Yaguchi. Below gap photon induced photocurrent enhancement in GaPN intermediate band solar cell fabricated by ion implantation. Japanese Journal of Applied Physics. 2025. 64. 6. 06SP12-1-06SP12-5
  • Naoyuki Nishimura, Ranjan Kumar Behera, Daisuke Kubota, Hiroyuki Kanda, Kohei Yamamoto, Hiroyuki Yaguchi, Takurou N. Murakami, Hiroyuki Matsuzaki. Differentiation between bulk and interfacial properties: analysis of time-dependent carrier injection in perovskite solar cells. Journal of Materials Chemistry C. 2025. 13. 17. 8734-8744
ｍore...
MISC (135)：
  • Analysis of optical gain mapping of GaN THz-QCL considering doping concentration of core layer. 応用物理学会学術講演会講演予稿集(CD-ROM). 2025. 72nd
  • Analysis of three-state double LO phonon scattering mechanism in GaN-based THz-QCL. 2025. 86th
  • 白川裕暉, 寺前航介, 矢口裕之, 藤川紗千恵. Growth and characterization of InSb1-xNx thin films by MBE. 応用物理学会学術講演会講演予稿集(CD-ROM). 2025. 86th
  • 石田峻之, LIN T.T., LIN T.T., 矢部航輝, 津田祐樹, 鈴木洋介, 宮川敬太, 秋山浩一, WANG L., WANG L., et al. Fabrication and Optical Characterization of a Terahertz Quantum Cascade Laser with a 23 μm- Thick Active Region and a Single-Metal Plasmonic Waveguide. 応用物理学会学術講演会講演予稿集(CD-ROM). 2025. 86th
  • 寺前航介, 矢口裕之, 藤川紗千恵. Raman scattering characterization of InSb1-xNx thin films grown by sputtering. 応用物理学会学術講演会講演予稿集(CD-ROM). 2025. 86th
ｍore...
Patents (4)：
Books (11)：
  • 薄膜作製応用ハンドブック
    エヌ・ティー・エス 2020 ISBN:9784860436315
  • 初歩から学ぶ固体物理学
    講談社 2017 ISBN:9784061532946
  • Advanced Silicon Carbide Devices and Processing
    Intechopen 2015 ISBN:9535121685
  • 理工学のための線形代数
    培風館 2013 ISBN:9784563004712
  • 薄膜の評価技術ハンドブック
    テクノシステム 2013 ISBN:9784924728677
ｍore...
Lectures and oral presentations  (280)：
  • First-principles study of the band tail states and optical properties of gallium phosphide nitride alloys
    (35th International Conference on the Physics of Semiconductors 2022 2022)
  • Arsenic Composition Dependence Of Up-conversion Luminescence Of Gallium Phosphide Arsenide Nitride Alloys
    (35th International Conference on the Physics of Semiconductors 2022 2022)
  • Fabrication of 280 nm LD structures using polarizaitn doped p-type layers and observation of high current injection emission
    (The 69th JSAP Spring Meeting 2022 2022)
  • Wavelength dependence of net modal gain of AlGaN-based DUV laser diode
    (The 69th JSAP Spring Meeting 2022 2022)
  • Excitation Power Dependence of Emission Lines from Er Doped GaAs
    (The 69th JSAP Spring Meeting 2022 2022)
ｍore...
Education (3)：
  • 1988 - 1991 University of Tokyo Graduate School of Engineering Department of Applied Physics
  • 1986 - 1988 University of Tokyo Graduate School of Engineering Department of Applied Physics
  • - 1986 University of Tokyo Faculty of Engineering Department of Applied Physics
Professional career (3)：
  • Dr. (Engineering) (University of Tokyo)
  • - (University of Tokyo)
  • - (University of Tokyo)
Committee career (10)：
  • 応用物理学会 応用物理学会論文賞委員
  • 2018 International Conference on Solid State Devices and Materials (SSDM2018) Program Committee JJAP Special Issues Editor
  • 2019 International Conference on Solid State Devices and Materials (SSDM2019) Program Committee JJAP Special Issues Editor
  • 2020 International Conference on Solid State Devices and Materials (SSDM2020) Program Committee JJAP Special Issues Editor
  • 国立研究開発法人物質・材料研究機構 機能性材料拠点構想アドバイザリー委員会委員
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Awards (5)：
  • 2021/03 - The Japan Society of Applied Physics The 68th JSAP Spring Meeting, 2021 Poster Award First-Principles Study of Optical Absorption Due to Band Tail States in GaPN
  • 2019/03 - The Japan Society of Applied Physics APEX/JJAP Editorial Contribution Award
  • 2013/04 - The Japan Society of Applied Physics APEX/JJAP Editorial Contribution Award
  • 1997 - The Japan Society of Applied Physics 2nd (1997) Young Scientist Presentation Award, Japanese Society of Applied Physics
  • 1995 - 井上研究奨励賞
Association Membership(s) (8)：
日本光学会 ,  Materials Research Society ,  American Physical Society ,  応用物理学会 ,  Optical Society of Japan ,  Materials Research Society ,  American Physical Society ,  The Japan Society of Applied Physics
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