標題: Growth of sparse arrays of narrow GaN nanorods hosting spectrally stable InGaN quantum disks
作者: Chen, Yen-Ting
Tsai, Wen-Che
Chen, Wen-Yen
Hsiao, Ching-Lien
Hsu, Hsu-Cheng
Chang, Wen-Hao
Hsu, Tzu-Min
Chen, Kuei-Hsien
Chen, Li-Chyong
電子物理學系
Department of Electrophysics
公開日期: 16-Jul-2012
摘要: Wafer-scale production of single InGaN quantum disks (QD) in-a-nanorod array with small rod diameter (> 9 nm) and low rod-density (< 10(8) cm(-2)) has been achieved without extensive processing steps. Excitation power-dependent mu PL spectrum of single QD reveals multi-excitonic peak with 0.75 meV blue-shift for 3 orders of magnitude increasing power, indicating the present system is spectrally stable and nearly free of quantum-confined Stark effects, due possibly to the strain relaxation induced by free surface of small rod diameters. The fully polarized emissions, a high working temperature (180 K), low rod density and good alignment, render this system promising as a potential quantum photon source. (C) 2012 Optical Society of America
URI: http://dx.doi.org/10.1364/OE.20.016166
http://hdl.handle.net/11536/16935
ISSN: 1094-4087
DOI: 10.1364/OE.20.016166
期刊: OPTICS EXPRESS
Volume: 20
Issue: 15
起始頁: 16166
結束頁: 16173
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