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Dive into the research topics where Tatsuya Kunisato is active.

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Featured researches published by Tatsuya Kunisato.


Japanese Journal of Applied Physics | 1995

Dependence of SiC blue light-emitting diode efficiency on the p-type layer growth temperature

Yasuhiko Matsushita; Takahiro Uetani; Tatsuya Kunisato; Junko Suzuki; Yasuhiro Ueda; Katsumi Yagi; Takao Yamaguchi; Tatsuhiko Niina

Dependence of SiC blue light-emitting diode (LED) efficiency on the p-type layer growth temperature in the liquid-phase epitaxial process was investigated. The external quantum efficiency of LEDs fabricated at a lower growth temperature was higher than that of those fabricated at a conventional growth temperature of 1720° C and maximized at a growth temperature of 1530° C. In this study, luminous intensity of 32 mcd was obtained at a forward current of 20 mA (λ P=467 nm).


Archive | 2004

Light emitting device and fabrication method thereof

Masayuki Hata; Ryoji Hiroyama; Tatsuya Kunisato; Keiichi Kuramoto; Hitoshi Hirano


Archive | 2002

Nitride-based semiconductor element and method of forming nitride-based semiconductor

Masayuki Hata; Tatsuya Kunisato; Nobuhiko Hayashi


Archive | 2000

Nitride-based semiconductor element and its manufacturing method

Masayuki Hata; Tatsuya Kunisato; Koji Tominaga; 浩司 冨永; 竜也 國里; 雅幸 畑


Archive | 1998

Light emitting device and manufacture thereof

Takashi Kano; Tatsuya Kunisato; Yasuhiko Matsushita; Yasuhiro Ueda; Katsumi Yagi; 康博 上田; 克己 八木; 竜也 國里; 保彦 松下; 隆司 狩野


Archive | 1997

Light emitting device with cap layer

Tatsuya Kunisato; Takashi Kano; Yasuhiro Ueda; Yasuhiko Matsushita; Katsumi Yagi


Archive | 1999

SEMICONDUCTOR DEVICE HAVING IMPROVED BUFFER LAYERS

Masayuki Hata; Tatsuya Kunisato; Kouji Tominaga; Yasuhiko Matsushita


Archive | 2009

Nitride-based light-emitting device and method of manufacturing the same

Tatsuya Kunisato; Ryoji Hiroyama; Masayuki Hata; Kiyoshi Oota


Archive | 2002

Nitride-based semiconductor element

Masayuki Hata; Nobuhiko Hayashi; Koji Tominaga; Yasuhiko Nomura; Tatsuya Kunisato; Hiroki Ohbo


Archive | 1997

Semiconductor laser device and method of designing the same

Takenori Goto; Nobuhiko Hayashi; Teruaki Miyake; Mitsuaki Matsumoto; Kenichi Matsukawa; Daisuke Ide; Koutarou Furusawa; Akira Ibaraki; Keiichi Yodoshi; Tatsuya Kunisato

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