Yuto Ando
Nagoya University
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Publication
Featured researches published by Yuto Ando.
Applied Physics Letters | 2018
Shigeyoshi Usami; Yuto Ando; Atsushi Tanaka; Kentaro Nagamatsu; Manato Deki; Maki Kushimoto; Shugo Nitta; Yoshio Honda; Hiroshi Amano; Yoshihiro Sugawara; Yongzhao Yao; Yukari Ishikawa
Dislocations that cause a reverse leakage current in vertical p-n diodes on a GaN free-standing substrate were investigated. Under a high reverse bias, dot-like leakage spots were observed using an emission microscope. Subsequent cathodoluminescence (CL) observations revealed that the leakage spots coincided with part of the CL dark spots, indicating that some types of dislocation cause reverse leakage. When etch pits were formed on the dislocations by KOH etching, three sizes of etch pits were obtained (large, medium, and small). Among these etch pits, only the medium pits coincided with leakage spots. Additionally, transmission electron microscopy observations revealed that pure screw dislocations are present under the leakage spots. The results revealed that 1c pure screw dislocations are related to the reverse leakage in vertical p-n diodes.
Physica Status Solidi (a) | 2017
Atsushi Tanaka; Ousmane Barry; Kentaro Nagamatsu; Junya Matsushita; Manato Deki; Yuto Ando; Maki Kushimoto; Shugo Nitta; Yoshio Honda; Hiroshi Amano
Physica Status Solidi (a) | 2018
Atsushi Tanaka; Yuto Ando; Kentaro Nagamatsu; Manato Deki; Heajeong Cheong; Barry Ousmane; Maki Kushimoto; Shugo Nitta; Yoshio Honda; Hiroshi Amano
The Japan Society of Applied Physics | 2018
Yuto Ando; Kentaro Nagamatsu; Atsushi Tanaka; Shigeyoshi Usami; Ousmane Barry; Manato Deki; Maki Kushimoto; Shugo Nitta; Yoshio Honda; Hiroshi Amano
The Japan Society of Applied Physics | 2018
Atsushi Tanaka; Shigeyoshi Usami; Yuto Ando; Kentaro Nagamatsu; Maki Kushimoto; Manato Deki; Syugo Nitta; Yoshio Honda; Hiroshi Amano
The Japan Society of Applied Physics | 2018
Shigeyoshi Usami; Hayata Fukushima; Yuto Ando; Atsushi Tanaka; Kentaro Nagamatsu; Maki Kushimoto; Manato Deki; Shugo Nitta; Yoshio Honda; Hiroshi Amano
The Japan Society of Applied Physics | 2018
Shigeyoshi Usami; Yoshihiro Sugawara; Yongzhao Yao; Yukari Ishikawa; Norihito Mayama; Kazuya Toda; Yuto Ando; Atsushi Tanaka; Kentaro Nagamatsu; Maki Kushimoto; Manato Deki; Shugo Nitta; Yoshio Honda; Hiroshi Amano
Japanese Journal of Applied Physics | 2018
Kentaro Nagamatsu; Yuto Ando; Zheng Ye; Ousmane Barry; Atsushi Tanaka; Manato Deki; Shugo Nitta; Yoshio Honda; Markus Pristovsek; Hiroshi Amano
international electron devices meeting | 2017
M. Ogura; Yuto Ando; Shigeyoshi Usami; Kentaro Nagamatsu; Maki Kushimoto; Manato Deki; Atsushi Tanaka; Shugo Nitta; Yoshio Honda; Markus Pristovsek; Hiroji Kawai; S. Yagi; Hiroshi Amano
The Japan Society of Applied Physics | 2017
Kazushi Sone; Junya Matsushita; Yuto Ando; Kentaro Nagamatsu; Atsushi Tanaka; Maki Kushimoto; Manato Deki; Shugo Nitta; Yoshio Honda; Hiroshi Amano