Research theme for competitive and other funds (4)：
2019 - 2023 Study on ultrashort pulsed semiconductor laser diodes for fluorescent bio-imaging
2017 - 2022 Development of Quantum Computing System Based on Ferroelectric/Paraelectric Stacked Waveguides
2017 - 2020 blue-green VCSELs towards high-quality light sources with three primary color
2015 - 2017 Anion-controlled nitride-based semiconductor alloys towards laser diodes in unexploited wavelength regions
Papers (79)：
Daichi Imai, Yuto Murakami, Hayata Toyoda, Kouki Noda, Kyosuke Masaki, Kazutoshi Kubo, Mayu Nomura, Makoto Miyoshi, Takao Miyajima, 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
Kouki Noda, Yuto Murakami, Hayata Toyoda, Kana Shibata, Youna Tsukada, Daichi Imai, Tetsuya Takeuchi, Makoto Miyoshi, Takao Miyajima. Characterizations of Subbandgap Optical Absorption in Undoped-GaN and 90 nm-Thick Al1-xInxN Thin Film on Sapphire Substrates Grown by Metal-Organic Chemical Vapor Deposition. Physica Status Solidi (B) Basic Research. 2024
Hayata Toyoda, Yuto Murakami, Rino Miyata, Daichi Imai, Makoto Miyoshi, Tetsuya Takeuchi, Takao Miyajima. Near-bandgap optical properties of Al1-x In x N thin films grown on a c-plane freestanding GaN substrate. Japanese Journal of Applied Physics. 2022. 61. SA. SA1017-SA1017
Takao Miyajima, Ryoma Seiki, Hiroki Shibuya, Yasuhiko Imai, Kazushi Sumitani, Shigeru Kimurab, Tsurugi Kondoa, Satoshi Kamiyamaa, Daichi Imaia. Structural Analysis of Ga1-xInxN/GaN Three-quantum Wells Grown on Side-walls of GaN Nano-wires by using an X-ray Nano-beam. SPring-8/SACLA利用研究成果集(Web). 2021. 9. 6. 400-404
Daichi Imai, Yuto Murakami, Rino Miyata, Hayata Toyoda, Tomoaki Yamaji, Makoto Miyoshi, Tetsuya Takeuchi, Takao Miyajima. Erratum: Analysis of the optical constants and bandgap energy in Al1-x In xN alloys grown on a c-plane freestanding GaN substrate by using spectroscopic ellipsometry (Japanese Journal of Applied Physics (2020) 59 (121001) DOI: 10.35848/1347-4065/abc29f). Japanese Journal of Applied Physics. 2021. 60. 7
野田幸樹, 加藤晴気, 正木京介, 村上裕人, 豊田隼大, 野村麻友, 市川颯人, 今井大地, 今井大地, 宮嶋孝夫, et al. Analysis of the carrier recombination processes and in-gap energy states in Al1-xInxN alloys. 名城大学総合研究所紀要. 2023. 28
野村麻友, 伊藤紫音, 村上裕人, 豊田隼大, 加藤晴気, 正木京介, 野田幸樹, 市川颯人, 今井大地, 今井大地, et al. Development of characterization method of thermal conductivity for nitride-based widegap semiconductors by photothermal deflection spectroscopy. 名城大学総合研究所紀要. 2023. 28
市川颯人, 宇田陽, 野田幸樹, 今井大地, 竹内哲也, 宮嶋孝夫. Analysis of the in-gap energy states in GaN- based tunnel junctions by using photothermal deflection spectroscopy. 応用物理学会秋季学術講演会講演予稿集(CD-ROM). 2023. 84th
野村麻友, 野田幸樹, 今井大地, 宮嶋孝夫. Theoretical studies on characterizations of optical and thermal properties of nitride-based semiconductor alloy thin films by photothermal deflection spectroscopy. 応用物理学会秋季学術講演会講演予稿集(CD-ROM). 2023. 84th
宮嶋孝夫, 清木良麻, 今井康彦, 隅谷和嗣, 木村滋, 近藤剣, 高木健太, 市川貴登, 澁谷弘樹, 上山智, et al. Structural Analysis of Ga1-xInxN/GaN Three-quantum Wells Grown on Side-walls of GaN Nano-wires by using 1100 Diffraction of X-ray Nano-beam. SPring-8/SACLA利用研究成果集(Web). 2023. 11. 2
Below bandgap optical absorption processes of Al<sub>1-x</sub>In<sub>x</sub>N thin films grown on a sapphire substrate
(応用物理学会春季学術講演会講演予稿集(CD-ROM) 2022)
Near-bandgap optical characterization of Al<sub>1-x</sub>In<sub>x</sub>N alloys grown on a sapphire substrate by using spectroscopic ellipsometry
(応用物理学会春季学術講演会講演予稿集(CD-ROM) 2022)
Establishment of the sub-bandgap optical absorption measurement methods in nitride-based semiconductor alloy thin films
(名城大学総合研究所紀要 2021)
Local structural analysis of Ga<sub>1-x</sub>In<sub>x</sub>N/GaN quantum shells on a GaN substrate by using X-ray nano-beam diffraction
(応用物理学会秋季学術講演会講演予稿集(CD-ROM) 2021)
Local structural analysis of a single Ga<sub>1-x</sub>In<sub>x</sub>N/GaN quantum shell by using an X-ray micro-beam from the large synchrotron radiation facility of SPring-8.
(応用物理学会春季学術講演会講演予稿集(CD-ROM) 2020)
