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	Effect of nonradiative recombination on carrier dynamics in gainnas/gaas quantum wells
	Sun Zheng; Wang Bao-Rui; Xu Zhong-Ying; Sun Bao-Quan; Ji Yang; Ni Hai-Qiao; Niu Zhi-Chuan
刊名	Chinese physics letters
	2006-09-01
卷号	23期号:9页码:2566-2569
ISSN号	0256-307X
通讯作者	Sun zheng(sz3288@red.semi.ac.cn)
英文摘要	The nonradiative recombination effect on carrier dynamics in gainnas/gaas quantum wells is studied by time-resolved photoluminescence (trpl) and polarization-dependent trpl at various excitation intensities. it is found that both recombination dynamics and spin relaxation dynamics strongly depend on the excitation intensity. under moderate excitation intensities the pl decay curves exhibit unusual non-exponential behaviour. this result is well stimulated by a rate equation involving both the radiative and non-radiative recombinations via the introduction of a new parameter of the effective concentration of nonradiative recombination centres in the rate equation. in the spin dynamics study, the spin relaxation also shows strong excitation power dependence. under the high excitation power an increase of spin polarization degree with time is observed. this new finding provides a useful hint that the spin process can be controlled by excitation power in gainnas systems.
WOS关键词	TIME-RESOLVED PHOTOLUMINESCENCE ; MOLECULAR-BEAM EPITAXY ; GAASN ALLOYS
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000240250300060
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2426638
专题	半导体研究所
通讯作者	Sun Zheng
作者单位	Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Sun Zheng,Wang Bao-Rui,Xu Zhong-Ying,et al. Effect of nonradiative recombination on carrier dynamics in gainnas/gaas quantum wells[J]. Chinese physics letters,2006,23(9):2566-2569.
APA	Sun Zheng.,Wang Bao-Rui.,Xu Zhong-Ying.,Sun Bao-Quan.,Ji Yang.,...&Niu Zhi-Chuan.(2006).Effect of nonradiative recombination on carrier dynamics in gainnas/gaas quantum wells.Chinese physics letters,23(9),2566-2569.
MLA	Sun Zheng,et al."Effect of nonradiative recombination on carrier dynamics in gainnas/gaas quantum wells".Chinese physics letters 23.9(2006):2566-2569.

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