2016 - 2019 Construction of process and design basis for the realization of a new ultra-low loss nitride heterostructure transistors
2013 - 2018 GaN/Siベース半導体の確立とその社会実装
2014 - 2017 次世代省エネパワーデバイス用大口径高耐圧・低欠陥 GaN エピタキシャルウエハの開発
2015 - 2016 多元窒化物半導体ヘテロ構造を用いた超低損失パワーデバイスに関する研究
2015 - 2016 省エネ用縦型GaN/Siパワーデバイスに関する基盤技術開発
2013 - 2014 半導体ハイブリッドMOS電極構造を用いた超高感度FET型ガスセンサの開発
2012 - 2014 ハイブリッドナノカーボン太陽電池の創成
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Papers (108):
Tomoyuki Kawaide, Yoshinobu Kometani, Sakura Tanaka, Takashi Egawa, Makoto Miyoshi. Current collapse suppression in AlGaInN/GaN HEMTs with thin unintentionally doped GaN channel and AlN back barrier grown on single-crystal AlN substrate. Applied Physics Letters. 2024. 124. 18. 18210-1-18210-4
Takahiro Fujisawa, Nan Hu, Tomoki Kojima, Takashi Egawa, Makoto Miyoshi. Over 43%-power-efficiency GaInN-based photoelectric transducer on free-standing GaN substrate for optical wireless power transmission system. Semiconductor Science and Technology. 2024. 39. 4. 045010-1-045010-6
Yukari Ishikawa, Yoshihiro Sugawara, Yongzhao Yao, Makoto Miyoshi, Takashi Egawa. Characterization of dislocations induced by Vickers indentation in GaN for explaining size ratios of dislocation patterns. Journal of Materials Science. 2024. 59. 7. 2974-2987
Daichi Imai, Yuto Murakami, Hayata Toyoda, Kouki Noda, Kyosuke Masaki, Kazutoshi Kubo, Mayu Nomura, Takao Miyajima, Makoto Miyoshi, Tetsuya Takeuchi. Sub-bandgap optical absorption processes in 300-nm-thick Al1-xInxN alloys grown on a c-plane GaN/sapphire template. Journal of Applied Physics. 2024. 135. 3. 035703-1-035703-8
Akira Mase, Yusuke Iida, Masaya Takimoto, Yutaka Nikai, Takashi Egawa, Makoto Miyoshi. Simulation analyses of carrier dynamics in npn-type GaN-heterojunction bipolar transistors with different-hole-concentration p-base layers. Journal of Vacuum Science & Technology B. 2023. 41. 5. 052206-1-052206-6
Wavelength dependence of temperature characteristics of InGaN photodetectors for optical wireless power supply
(The 6th Optical Wireless and Fiber Power Transmission Conference (OWPT 2024) 2024)
Near-UV photoelectric transducers for OWPT systems based on GaInN multiple quantum-well structures
(The 6th Optical Wireless and Fiber Power Transmission Conference (OWPT 2024) 2024)
Fabrication of high AlN-mole-fraction Al0.7Ga0.3N channel HFETs using a single-crystal AlN substrate
(16th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma 2024) 2024)
2023/11 - 14th International Conference on Nitride Semiconductors, ICNS-14 Outstanding Poster Award High-efficiency GaInN-based photovoltaic cells on free-standing GaN substrate for optical wireless power transmission system
2022/03 - The ISPlasma Prize 2022 The ISPlasma Prize, The 2022 Best Short Presentation Awards Effect of a Thin AlN Layer Inserted into the GaN Drift Layers on Reverse Breakdown Behavior for Fully Vertical GaN-on-Si Schottky Barrier Diodes
2021/09 - AIP Advances Editor's Pick Article Improved epilayer qualities and electrical characteristics for GaInN multiple-quantum-well photovoltaic cells and their operation under artificial sunlight and monochromatic light illuminations
2017 - Solid-State Electronics Editor's Choice Effect of well layer thickness on quantum and energy conversion efficiencies for InGaN/GaN multiple quantum well solar cell
2015 - Applied Physics Express Spotlights Nearly lattice-matched InAlN/AlGaN two-dimensional electron gas heterostructures grown by metalorganic chemical vapor deposition