Yusuke Kumazaki

First demonstration of X-band AlGaN/GaN high electron mobility transistors using free-standing AlN substrate over 15 W mm⁻¹ output power density

Shiro Ozaki, Junya Yaita, Atsushi Yamada et al. · Applied Physics Express · 2021 · 45 citations

Engineering, Electrical Engineering, Materials Science +16

Over 80% power-added-efficiency GaN high-electron-mobility transistors on free-standing GaN substrates

Yusuke Kumazaki, Toshihiro Ohki, Junji Kotani et al. · Applied Physics Express · 2020 · 40 citations

Engineering, Electrical Engineering, Materials Science +17

Precise thickness control in recess etching of AlGaN/GaN hetero-structure using photocarrier-regulated electrochemical process

Yusuke Kumazaki, Keisuke Uemura, Taketomo Sato et al. · Journal of Applied Physics · 2017 · 30 citations · Full text

Engineering, Electrical Engineering, Materials Science +17

Precise Structural Control of GaN Porous Nanostructures Utilizing Anisotropic Electrochemical and Chemical Etching for the Optical and Photoelectrochemical Applications

Yusuke Kumazaki, Satoru Matsumoto, Taketomo Sato · Journal of The Electrochemical Society · 2017 · 25 citations · Full text

Natural Sciences, Materials Engineering, Materials Science +17

Remarkable Current Collapse Suppression in GaN HEMTs on Free-standing GaN Substrates

Yusuke Kumazaki, Toshihiro Ohki, Junji Kotani et al. · 2019 · 20 citations

Engineering, Electrical Engineering, Materials Science +17