Dr. Koichi Tachibana Profile

Dr. Koichi Tachibana

Research Scientist at Toshiba Corp

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Author

Publications (3)

Proceedings Article | 6 February 2012 Paper

Effect of dislocation density on efficiency curves in InGaN/GaN multiple quantum well light-emitting diodes

Yoshiyuki Harada, Toshiki Hikosaka, Shigeya Kimura, Maki Sugai, Hajime Nago, Koichi Tachibana, Naoharu Sugiyama, Shinya Nunoue

Proceedings Volume 8278, 82780J (2012) https://doi.org/10.1117/12.907679

KEYWORDS: External quantum efficiency, Light emitting diodes, Quantum wells, Luminescence, Blue light emitting diodes, Quantum efficiency, Optical properties, Sapphire, Gallium nitride, Fabrication

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Proceedings Article | 4 March 2011 Paper

Direct observation of lattice constant variations depending on layer structures in an InGaN/GaN MQW LED

Shigeya Kimura, Koichi Tachibana, Toshiyuki Oka, Hajime Nago, Hisashi Yoshida, Shinya Nunoue

Proceedings Volume 7939, 79392D (2011) https://doi.org/10.1117/12.874626

KEYWORDS: Indium gallium nitride, Gallium nitride, Indium, Electroluminescence, Blue light emitting diodes, Light emitting diodes, Chemical species, Transmission electron microscopy, Quantum wells, Scanning transmission electron microscopy

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Proceedings Article | 8 February 2007 Paper

Narrow-width photoluminescence spectra of InGaN quantum wells grown on GaN (0001) substrates with misorientation toward [1100] direction

Koichi Tachibana, Hajime Nago, Shin-ya Nunoue

Proceedings Volume 6473, 647307 (2007) https://doi.org/10.1117/12.699662

KEYWORDS: Indium gallium nitride, Quantum wells, Gallium nitride, Crystals, Atomic force microscopy, Optical properties, Luminescence, Gallium, Temperature metrology, Objectives

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