Characteristics of Partially Disordered Gallium Nitride Nanodots Synthesized by Pulsed-Laser Ablation
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概要
- 論文の詳細を見る
GaN nanodots were synthesized at room temperature in an Ar atmosphere by a laser ablation technique under a pressure of 100 Pa. The synthesized nanodots were found to be smaller than 10 nm and the GaN phase was Ga-rich. High-resolution transmission electron microscopy and its Fourier transform confirmed that these GaN nanodots contained partially disordered crystallites. In spite of this structural instability, their medium ranged atomic order resulted in quantum-shifted luminescence due to the confinement of electrons in the photoluminescence spectra, which is consistent with theoretical calculations on the size-dependent band gap of crystalline GaN.
- 2005-04-15
著者
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Shim Kwang
Department Of Ceramic Engineering Ceramic Processing Research Center (cprc) Hanyang University
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Koshizaki Naoto
Nanoarchitectonics Research Center (narc) National Institute Of Advanced Industrial Science And Tech
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WON Jong
The Institute of Scientific and Industrial Research, Osaka University
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Shim Seung
Department Of Ceramic Engineering Ceramic Processing Research Center (cprc) Hanyang University
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Yoon Jong-won
Department Of Advanced Materials Engineering Dong-eui University
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Hirotsu Yoshihiko
The Institute Of Science And Industrial Research Osaka University
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Yoon Jong-Won
Department of Ceramic Engineering, Ceramic Processing Research Center (CPRC), Hanyang University, Seoul 133-791, Korea
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Hirotsu Yoshihiko
The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki Osaka 567-0047, Japan
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Koshizaki Naoto
Nanoarchitectonics Research Center (NARC), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
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Shim Kwang
Department of Ceramic Engineering, Ceramic Processing Research Center (CPRC), Hanyang University, Seoul 133-791, Korea
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Won Jong
The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki Osaka 567-0047, Japan
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Shim Seung
Department of Ceramic Engineering, Ceramic Processing Research Center (CPRC), Hanyang University, Seoul 133-791, Korea
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