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	Optical properties of the e-0+delta(0) energy level higher than the bandgap of gaas studied by micro-photoluminescence technique
	Bao Zhi-Hua; Jing Wei-Ping; Luo Xiang-Dong; Tan Ping-Heng
刊名	Acta physica sinica
	2007-07-01
卷号	56期号:7页码:4213-4217
关键词	Semi-insulated gaas Micro-photoluminescence Spin-orbit split-off valence band
ISSN号	1000-3290
通讯作者	Bao zhi-hua()
英文摘要	Using micro-photoluminescence technique, we observed a new photoluminescence peak about 0.348 ev above the bandgap of gaas (e-0). by analyzing its optical characteristics, we assigned this peak to the nonequilibrium luminescence emission from the e-0 + delta(0) bandgap in semi-insulated gaas, which was further verified by raman results. the observed polarization, excitation power dependence and temperature dependence of the photoluminescence spectra from the e-0 + delta(0) energy level were very similar to those from the e-0 of gaas. this mainly resulted from the common conduction band around gamma(6) that was involved in the two optical transition processes, and indicated that the optical properties of bulk gaas were mainly determined by the intrinsic properties of the conduction band. our results demonstrated that the micro-photoluminescence technique is a powerful tool to investigate the high energy states above the fundamental bandgap in semiconductor materials.
WOS关键词	RAMAN-SCATTERING ; SEMICONDUCTORS ; SPECTROSCOPY ; ALLOYS ; GAP
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
语种	英语
出版者	CHINESE PHYSICAL SOC
WOS记录号	WOS:000248134500095
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2426927
专题	半导体研究所
通讯作者	Bao Zhi-Hua
作者单位	1.Nantong Univ, Jiangsu Prov Key Lab ASIC Design, Nantong 226007, Peoples R China 2.Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Bao Zhi-Hua,Jing Wei-Ping,Luo Xiang-Dong,et al. Optical properties of the e-0+delta(0) energy level higher than the bandgap of gaas studied by micro-photoluminescence technique[J]. Acta physica sinica,2007,56(7):4213-4217.
APA	Bao Zhi-Hua,Jing Wei-Ping,Luo Xiang-Dong,&Tan Ping-Heng.(2007).Optical properties of the e-0+delta(0) energy level higher than the bandgap of gaas studied by micro-photoluminescence technique.Acta physica sinica,56(7),4213-4217.
MLA	Bao Zhi-Hua,et al."Optical properties of the e-0+delta(0) energy level higher than the bandgap of gaas studied by micro-photoluminescence technique".Acta physica sinica 56.7(2007):4213-4217.

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