T
Takafumi Yao
Researcher at Tohoku University
Publications - 591
Citations - 14672
Takafumi Yao is an academic researcher from Tohoku University. The author has contributed to research in topics: Molecular beam epitaxy & Photoluminescence. The author has an hindex of 49, co-authored 591 publications receiving 14287 citations. Previous affiliations of Takafumi Yao include National Institute of Advanced Industrial Science and Technology.
Papers
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Molecular Beam Epitaxy of Al Doped n-ZnSe
TL;DR: In this paper, the electrical, optical and structural properties of ZnSe are investigated and growth conditions such as Al cell temperature and substrate temperature are systematically examined, and the electrical and optical properties of Al layers are investigated.
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Photoelectrochemical Properties of InxGa1–xN/GaN Multiquantum Well Structures in Depletion Layers
Katsushi Fujii,Katsushi Fujii,Shinichiro Nakamura,Satoshi Yokojima,Takenari Goto,Takafumi Yao,Masakazu Sugiyama,Yoshiaki Nakano +7 more
TL;DR: In this article, the authors evaluated the electrochemical and photoelectrochemical properties of InxGa1-xN/GaN multi quantum well (MQW) structures in the depletion layer.
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Electrical properties of heavily Al-doped ZnSe grown by molecular beam epitaxy
TL;DR: In this article, the electrical properties of heavily Al-doped ZnSe grown by molecular beam epitaxy, whose electron concentration is saturated, were studied. And it was shown that electron mobility decreases with the increase of Al cell temperature, while it is almost independent of measurement temperature.
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High quality ZnTe heteroepitaxy layers using low-temperature buffer layers
TL;DR: In this paper, a low dislocation density ZnTe heteroepitaxial layers are achieved by inserting a thin buffer layer at low growth temperature (LT-buffer) followed by annealing.
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Structural and optical investigations of periodically polarity inverted ZnO heterostructures on (0001) Al2O3
Jinsub Park,Takenari Goto,Sung-Kwon Hong,Sang Hyun Lee,Jung Woo Lee,Tsutomu Minegishi,S. H. Park,Jiho Chang,D. C. Oh,JeongYong Lee,Takafumi Yao +10 more
TL;DR: In this paper, structural and optical properties of one-dimensional grating of ZnO consisting of periodically polarity inverted structures on (0001) Al2O3 substrates were reported.