Two-dimensional analysis of the nonuniform quantum yields of multiple quantum wells for AlGaN-based deep-ultraviolet LEDs grown on AlN templates with dense macrosteps using cathodoluminescence spectroscopy
Nagasawa, Yosuke, Sugie, Ryuichi, Kojima, Kazunobu, Hirano, Akira, Ippommatsu, Masamichi, Honda, Yoshio, Amano, Hiroshi, Akasaki, Isamu, Chichibu, Shigefusa F.
Published in Journal of applied physics (07.12.2019)
Published in Journal of applied physics (07.12.2019)
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Journal Article
Discrete AlN mole fraction of n/12 (n = 4–8) in Ga-rich zones functioning as electron pathways created in nonflat AlGaN layers grown on high-miscut sapphire substrates
Nagasawa, Yosuke, Hirano, Akira, Ippommatsu, Masamichi, Sako, Hideki, Hashimoto, Ai, Sugie, Ryuichi, Honda, Yoshio, Amano, Hiroshi, Akasaki, Isamu, Kojima, Kazunobu, Chichibu, Shigefusa F.
Published in Journal of applied physics (28.04.2021)
Published in Journal of applied physics (28.04.2021)
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Journal Article
Improved Efficiency of 255--280 nm AlGaN-Based Light-Emitting Diodes
Pernot, Cyril, Kim, Myunghee, Fukahori, Shinya, Inazu, Tetsuhiko, Fujita, Takehiko, Nagasawa, Yosuke, Hirano, Akira, Ippommatsu, Masamichi, Iwaya, Motoaki, Kamiyama, Satoshi, Akasaki, Isamu, Amano, Hiroshi
Published in Applied physics express (01.06.2010)
Published in Applied physics express (01.06.2010)
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Journal Article
Development of high efficiency 255-355 nm AlGaN-based light-emitting diodes
Pernot, Cyril, Fukahori, Shinya, Inazu, Tetsuhiko, Fujita, Takehiko, Kim, Myunghee, Nagasawa, Yosuke, Hirano, Akira, Ippommatsu, Masamichi, Iwaya, Motoaki, Kamiyama, Satoshi, Akasaki, Isamu, Amano, Hiroshi
Published in Physica status solidi. A, Applications and materials science (01.07.2011)
Published in Physica status solidi. A, Applications and materials science (01.07.2011)
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Journal Article
AlGaN-Based Deep Ultraviolet Light-Emitting Diodes Fabricated on Patterned Sapphire Substrates
Kim, Myunghee, Fujita, Takehiko, Fukahori, Shinya, Inazu, Tetsuhiko, Pernot, Cyril, Nagasawa, Yosuke, Hirano, Akira, Ippommatsu, Masamichi, Iwaya, Motoaki, Takeuchi, Tetsuya, Kamiyama, Satoshi, Yamaguchi, Masahito, Honda, Yoshio, Amano, Hiroshi, Akasaki, Isamu
Published in Applied physics express (01.09.2011)
Published in Applied physics express (01.09.2011)
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Journal Article
Improvement of Light Extraction Efficiency for AlGaN-Based Deep Ultraviolet Light-Emitting Diodes
Inazu, Tetsuhiko, Fukahori, Shinya, Pernot, Cyril, Kim, Myung Hee, Fujita, Takehiko, Nagasawa, Yosuke, Hirano, Akira, Ippommatsu, Masamichi, Iwaya, Motoaki, Takeuchi, Tetsuya, Kamiyama, Satoshi, Yamaguchi, Masahito, Honda, Yoshio, Amano, Hiroshi, Akasaki, Isamu
Published in Japanese Journal of Applied Physics (01.12.2011)
Published in Japanese Journal of Applied Physics (01.12.2011)
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Journal Article
Dual-peak electroluminescence spectra generated from Al n /12 Ga 1-n/12 N (n = 2, 3, 4) for AlGaN-based LEDs with nonflat quantum wells
Nagasawa, Yosuke, Kojima, Kazunobu, Hirano, Akira, Ippommatsu, Masamichi, Honda, Yoshio, Amano, Hiroshi, Chichibu, Shigefusa F
Published in Journal of physics. D, Applied physics (23.06.2022)
Published in Journal of physics. D, Applied physics (23.06.2022)
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Journal Article
Uneven AlGaN multiple quantum well for deep-ultraviolet LEDs grown on macrosteps and impact on electroluminescence spectral output
Kaneda, Michiko, Pernot, Cyril, Nagasawa, Yosuke, Hirano, Akira, Ippommatsu, Masamichi, Honda, Yoshio, Amano, Hiroshi, Akasaki, Isamu
Published in Japanese Journal of Applied Physics (01.06.2017)
Published in Japanese Journal of Applied Physics (01.06.2017)
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Journal Article
Dual-peak electroluminescence spectra generated from Al n /12Ga1-n/12N (n = 2, 3, 4) for AlGaN-based LEDs with nonflat quantum wells
Nagasawa, Yosuke, Kojima, Kazunobu, Hirano, Akira, Ippommatsu, Masamichi, Honda, Yoshio, Amano, Hiroshi, Chichibu, Shigefusa F
Published in Journal of physics. D, Applied physics (23.06.2022)
Published in Journal of physics. D, Applied physics (23.06.2022)
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Journal Article
Discrete wavelengths observed in electroluminescence originating from Al1/2Ga1/2N and Al1/3Ga2/3N created in nonflat AlGaN quantum wells
Nagasawa, Yosuke, Kojima, Kazunobu, Hirano, Akira, Sako, Hideki, Hashimoto, Ai, Sugie, Ryuichi, Ippommatsu, Masamichi, Honda, Yoshio, Amano, Hiroshi, Chichibu, Shigefusa F
Published in Journal of physics. D, Applied physics (02.12.2021)
Published in Journal of physics. D, Applied physics (02.12.2021)
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Journal Article
Discrete wavelengths observed in electroluminescence originating from Al 1/2 Ga 1/2 N and Al 1/3 Ga 2/3 N created in nonflat AlGaN quantum wells
Nagasawa, Yosuke, Kojima, Kazunobu, Hirano, Akira, Sako, Hideki, Hashimoto, Ai, Sugie, Ryuichi, Ippommatsu, Masamichi, Honda, Yoshio, Amano, Hiroshi, Chichibu, Shigefusa F
Published in Journal of physics. D, Applied physics (02.12.2021)
Published in Journal of physics. D, Applied physics (02.12.2021)
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Journal Article
Study on the Main‐Chain Structure of Amorphous Fluorine Resins for Encapsulating AlGaN‐Based DUV‐LEDs
Yamada, Kiho, Nagasawa, Yosuke, Nagai, Shoko, Hirano, Akira, Ippommatsu, Masamichi, Aosaki, Ko, Honda, Yoshio, Amano, Hiroshi, Akasaki, Isamu
Published in Physica status solidi. A, Applications and materials science (23.05.2018)
Published in Physica status solidi. A, Applications and materials science (23.05.2018)
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Journal Article
Development of highly durable deep-ultraviolet AlGaN-based LED multichip array with hemispherical encapsulated structures using a selected resin through a detailed feasibility study
Nagai, Shoko, Yamada, Kiho, Hirano, Akira, Ippommatsu, Masamichi, Ito, Masahiro, Morishima, Naoki, Aosaki, Ko, Honda, Yoshio, Amano, Hiroshi, Akasaki, Isamu
Published in Japanese Journal of Applied Physics (01.08.2016)
Published in Japanese Journal of Applied Physics (01.08.2016)
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Journal Article
Detailed analysis of Ga-rich current pathways created in an n-Al0.7Ga0.3N layer grown on an AlN template with dense macrosteps
Nagasawa, Yosuke, Hirano, Akira, Ippommatsu, Masamichi, Sako, Hideki, Hashimoto, Ai, Sugie, Ryuichi, Honda, Yoshio, Amano, Hiroshi, Akasaki, Isamu, Kojima, Kazunobu, Chichibu, Shigefusa F.
Published in Applied physics express (01.12.2020)
Published in Applied physics express (01.12.2020)
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Journal Article
Weak metastability of Al x Ga 1−x N (x = 13/24, 15/24, 17/24) shown by analyzing AlGaN grown on AlN with dense macrosteps
Hirano, Akira, Nagasawa, Yosuke, Ippommatsu, Masamichi, Sako, Hideki, Hashimoto, Ai, Sugie, Ryuichi, Honda, Yoshio, Amano, Hiroshi, Kojima, Kazunobu, Chichibu, Shigefusa F.
Published in Applied physics express (01.07.2022)
Published in Applied physics express (01.07.2022)
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Journal Article
Weak metastability of Al x Ga1−x N (x = 13/24, 15/24, 17/24) shown by analyzing AlGaN grown on AlN with dense macrosteps
Hirano, Akira, Nagasawa, Yosuke, Ippommatsu, Masamichi, Sako, Hideki, Hashimoto, Ai, Sugie, Ryuichi, Honda, Yoshio, Amano, Hiroshi, Kojima, Kazunobu, Chichibu, Shigefusa F.
Published in Applied physics express (27.06.2022)
Published in Applied physics express (27.06.2022)
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Journal Article