Rchr
J-GLOBAL ID：201601008996814534
Update date: Aug. 31, 2024
Hideki Hirayama
ヒラヤマ ヒデキ | Hideki Hirayama
Affiliation and department：
Job title：
Chief Scientist
Research field (1)：
Semiconductors, optical and atomic physics
Research theme for competitive and other funds (16)：
- 2018 - 2021 Characterization of defect levels in UV-LEDs by below-gap excitation light under operating condition
- 2016 - 2021 Research on novel light emitting devices using the unique properties generated by singularity of crystal
- 2015 - 2020 Research on unexplored frequency quantum-cascade lasers using nitride semiconductors
- 2012 - 2015 Comprehensive multi-level spectroscopy of below-gap states without electrode
- 2012 - 2015 Research on vertical-type large-area high-power deep-UV LEDs fabricated on Si substrates
- 2011 - 2015 THz量子カスケードレーザの動作高温化と周波数拡大に関する研究
- 2009 - 2011 Characterization of Defect Levels with Energy and Spatial Distribution by Deep Level Microscope
- 2009 - 2011 Research for Terahertz Quantum Cascade Lasers using Nitride-based Semiconductors
- 2006 - 2010 Research for high-efficiency deep-UV emitting devices using quaternary InAlGaN nitride semiconductors
- 2007 - 2008 Research for Far-infrared-Terahertz Quantum Cascade Lasers using Nitride-based Semiconductors
- 2003 - 2007 Development of deep UV light emitting devices using nano-technology and the application
- 2002 - 2004 Development of ultraviolet bright light-emitting diodes using quaternary InAlGaN
- 2001 - 2003 Fabrication of high hole density p-type nitride semiconductor film crystal using alternating xrdoping techniques and its applications
- 1999 - 2001 Study on Impurity Co-Doping by Atomic Positional Control
- 1998 - 2001 Fabrication of Photonic Crystals with Spatial Phase Control Regions and their applications to Optical Devices
- 1998 - 1999 紫外半導体レーザーの為の高輝度紫外発光III族窒素化物量子ドットに関する研究
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Papers (294)：
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Hideaki Murotani, Kunio Himeno, Hayate Ohkawara, Kaichi Tani, Satoshi Kurai, Narihito Okada, Noritoshi Maeda, Muhammad Ajmal Khan, Hideki Hirayama, Yoichi Yamada. Photoluminescence Excitation Spectroscopy of Stimulated Emission from AlGaN-Based Multiple Quantum Wells with an Emission Wavelength Around 280 nm. physica status solidi (b). 2024
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Li Wang, Mingxi Chen, Tsung-Tse Lin, Ke Wang, Hideki Hirayama. Interdiffusion limiting on self-consistent optical gain in terahertz quantum cascade lasers. Applied Physics Express. 2023. 16. 7. 072004-072004
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Li Wang, Tsung-Tse Lin, Ke Wang, Hideki Hirayama. Clean three-level direct-phonon injection terahertz quantum cascade laser. Applied Physics Letters. 2023. 122. 22
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Li Wang, Tsung-Tse Lin, Mingxi Chen, Ke Wang, Hideki Hirayama. Terahertz quantum cascade laser considering compositional interdiffusion effect. Applied Physics Express. 2023. 16. 3. 032007-032007
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Li Wang, Tsung-Tse Lin, Ke Wang, Hideki Hirayama. Optical gain reduction caused by nonrelevant subbands in narrow-period terahertz quantum cascade laser designs. Scientific Reports. 2022. 12. 1
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MISC (108)：
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牟田実広, 大神裕之, 毛利健吾, 河島宏和, 前田哲利, KHAN Ajmal, 鹿嶋行雄, 松浦恵里子, 中村祐樹, 住司光, et al. Development of Shorter Wavelength 230 nm-Band Far-UVC LEDs and Realization of High Output Power LED Panels. 電子情報通信学会技術研究報告(Web). 2023. 123. 288(ED2023 14-37)
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M. Ajmal Khan, Juan Paolo Bermundo, Yasuaki Ishikawa, Hiroshi Ikenoue, Sachie Fujikawa, Eriko Matsuura, Yukio Kashima, Noritoshi Maeda, Masafumi Jo, Hideki Hirayama. Impact of Mg-level on lattice-relaxation in p-AlGaN hole source layer (HSL) and attempting excimer laser annealing on p-AlGaN HSL of UVB emitters (vol 32, 055702, 2021). NANOTECHNOLOGY. 2021. 32. 36
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室谷英彰, 三好博之, 武田椋平, 中生拓希, 倉井聡, KHAN M. Ajmal, 前田哲利, 定昌史, 平山秀樹, 山田陽一. Analysis of efficiency droop phenomena in AlGaN-based multiple quantum wells using rate equation based on radiative and nonradiative recombination of excitons. 応用物理学会春季学術講演会講演予稿集(CD-ROM). 2020. 67th. 3114-3114
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三好博之, 武田椋平, 中生拓希, 倉井聡, 室谷英彰, KHAN M. Ajmal, 前田哲利, 定昌史, 平山秀樹, 山田陽一. Excitation density dependence of radiative and nonradiative recombination rates of excitons in AlGaN multiple quantum wells. 応用物理学会春季学術講演会講演予稿集(CD-ROM). 2020. 67th. 3113-3113
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田邊凌平, 濱田晟, 別府寛太, 倉井聡, 室谷英彰, 前田哲利, 定昌史, 平山秀樹, 山田陽一. Observations of stimulated emission and longitudinal cavity mode in AlGaN-based UV-C multiple quantum wells at room temperature. 応用物理学会秋季学術講演会講演予稿集(CD-ROM). 2020. 81st
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Books (40)：
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Growth Techniques of AlN/AlGaN and Development of High-Efficiency Deep-Ultraviolet Light-emitting Diodes
Woodhead Publishing 2015
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深紫外LEDの効率向上と市場展開への期待
株式会社オプトロニクス 2015
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AlGaN深紫外LEDの進展と最近の動向
日本工業出版株式会社 2015
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無極性a面AlGaN/AlNの高温成長と深紫外発光特性
一般社団法人電子情報通信学会 2015
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GaN系THz-QCLの最近の進展
一般社団法人電子情報通信学会 2015
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Lectures and oral presentations (187)：
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Current Status and Future of III-Nitride Ultraviolet and THz Emittres
(International Workshop on Nitiride Semiconductors (IWN 2016), 2016)
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THz量子カスケードレーザの進展と展望
(第140回微小光学研究会 2016)
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深紫外LEDの最近の進展と展望
(応用物理学会・応用電子物性分科会6月研究例会 2016)
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テラヘルツ量子カスケードレーザの進展と今後の展望
(応用物理学会・テラヘルツ電磁波技術究例会 2016)
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Recent Progress of AlGaN Deep-UV LED using Transparent Contact Layer
(15th Symposium on the Science and Technology of Lighting (LS-15) 2016)
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