Kohji Ohtsuka

Optical properties of hexagonal GaN

Takahiro Kawashima, Hisashi Yoshikawa, Sadao Adachi et al. · Journal of Applied Physics · 1997 · 334 citations

Engineering, Materials Engineering, Materials Science +17

Dependence of impurity incorporation on the polar direction of GaN film growth

Masatomo Sumiya, K. Yoshimura, Kohji Ohtsuka et al. · Applied Physics Letters · 2000 · 175 citations

Engineering, Materials Engineering, Materials Science +15

Growth mode and surface morphology of a GaN film deposited along the N-face polar direction on <i>c</i>-plane sapphire substrate

Masatomo Sumiya, K. Yoshimura, Takahiro Ito et al. · Journal of Applied Physics · 2000 · 135 citations

Engineering, Materials Engineering, Materials Science +17

Analysis of the polar direction of GaN film growth by coaxial impact collision ion scattering spectroscopy

Masatomo Sumiya, M. Tanaka, Kohji Ohtsuka et al. · Applied Physics Letters · 1999 · 106 citations

Natural Sciences, Materials Engineering, Materials Science +17

Influences of initial nitridation and buffer layer deposition on the morphology of a (0001) GaN layer grown on sapphire substrates

Shunro Fuke, Hidekazu Teshigawara, Kazuhiro Kuwahara et al. · Journal of Applied Physics · 1998 · 82 citations

Engineering, Materials Engineering, Materials Science +16