Rchr
J-GLOBAL ID:201401040627161182   Update date: Jan. 30, 2024

Ishii Ryota

イシイ リョウタ | Ishii Ryota
Affiliation and department:
Homepage URL  (1): http://www.optomater.kuee.kyoto-u.ac.jp/index.html
Research field  (3): Electric/electronic material engineering ,  Magnetism, superconductivity, and strongly correlated systems ,  Crystal engineering
Research keywords  (6): 時空間分解分光 ,  Ultra-widegap semiconductors ,  Near-field spectroscopy ,  deep-ultraviolet spectroscopy ,  optical properties of semiconductors ,  exciton
Research theme for competitive and other funds  (20):
  • 2023 - 2026 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
  • 2021 - 2025 Visible, long wavelength LEDs based on In-rich InGaN on ScAlMgO4 substrates
  • 2020 - 2025 Light emitting synthesizer : aiming to create the ultimate lighting devices
  • 2022 - 2023 超短波長発光する深紫外LEDの高効率化に向けた高Al組成AlGaN量子井戸構造の輻射・非輻射再結合機構の解明
  • 2022 - 2023 深紫外・赤外融合分光法を用いた超ワイドギャップ半導体素励起の物性解明と制御
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Papers (35):
  • Ryota Ishii, Akira Yoshikawa, Mitsuru Funato, Yoichi Kawakami. Revisiting the substitutional Mg acceptor binding energy of AlN. Physical Review B. 2023. 108. 3
  • Shiki Tanaka, Ryota Ishii, Norman Susilo, Tim Wernicke, Michael Kneissl, Mitsuru Funato, Yoichi Kawakami. Picosecond-laser-excited photoluminescence study of AlGaN quantum wells on epitaxially laterally overgrown AlN/sapphire under selective and non-selective excitation conditions. Japanese Journal of Applied Physics. 2022. 61. 11. 112002-112002
  • Ryota Ishii, Toru Nagashima, Reo Yamamoto, Tatsuya Hitomi, Mitsuru Funato, Yoichi Kawakami. Stimulated emission mechanism of aluminum nitride. Physical Review B. 2022. 105. 205206
  • Tomoaki Nambu, Taketo Yano, Soshi Umeda, Naoki Yokoyama, Hiroto Honda, Yasunori Tanaka, Yutaka Maegaki, Yusuke Mori, Masashi Yoshimura, Shuhei Kobayashi, et al. DUV coherent light emission from ultracompact microcavity wavelength conversion device. Optics Express. 2022. 30. 11. 18628-18628
  • A. Kafar, A. Sakaki, R. Ishii, K. Shojiki, S. Stanczyk, K. Gibasiewicz, G. Staszczak, L. Marona, D. Schiavon, S. Grzanka, et al. Structural and emission improvement of cyan-emitting InGaN quantum wells by introducing a large substrate misorientation angle. Optical Materials Express. 2022. 12. 1. 119-119
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MISC (3):
Books (1):
  • 光と物質の量子相互作用ハンドブック
    エヌ・ティー・エス 2023 ISBN:9784860438265
Lectures and oral presentations  (12):
  • Fundamental optical properties of AlN revealed by deep-ultraviolet spectroscopy
    (International Conference on Nitride Semiconductors 14 2023)
  • Spontaneous and stimulated emission physics of aluminum nitride
    (SPIE PHOTONICS WEST 2023 2023)
  • Luminescence spectroscopies on 265-nm AlGaN DUV LEDs and AlN films grown on AlN substrates
    (SPIE PHOTONICS WEST 2022 2022)
  • Recent progress in deep-ultraviolet scanning near-field optical microscope: a tool visualizing the luminescence properties of Al-rich AlGaN active layers
    (2021)
  • Exciton fine structure of aluminum nitride
    (2020)
more...
Professional career (1):
  • 博士(工学) (京都大学)
Work history (5):
  • 2014/04 - 現在 Kyoto University Graduate School of Engineering, Department of Electronic Science and Engineering
  • 2019/05 - 2019/06 モンペリエ大学シャルルクーロン研究所 客員研究員
  • 2013/04 - 2014/03 Kyoto University Graduate School of Engineering, Department of Electronic Science and Engineering
  • 2010/04 - 2013/03 Kyoto University Graduate School of Engineering
  • 2008/04 - 2010/03 Kyoto University Graduate School of Engineering
Committee career (10):
  • 2022/03 - 現在 応用物理学会 学術講演会 中分類 15.4 プログラム編集委員
  • 2019/04 - 現在 14th International Conference on Nitride Semiconductors Financial Committee
  • 2021/04 - 2023/03 応用物理学会関西支部幹事
  • 2019/04 - 2021/03 電子材料シンポジウム(EMS 38-39) 企業展示委員
  • 2018 - 2018 Intenational Worikshop on Nitride Semiconductors (IWN) 2018 General affair
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Awards (7):
  • 2023/08 - 2023 Masao Horiba Awards
  • 2022/03 - 最優秀ポスター賞 高空間分解能を有する深紫外近接場光学顕微鏡の開発
  • 2019/11 - エヌエフ基金 第8回研究開発奨励賞(優秀賞)
  • 第8回窒化物半導体結晶成長講演会 研究奨励賞
  • 第31回電子材料シンポジウム EMS賞
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