Impact of polarization on quasi-two-dimensional exciton and barrier-width dependence of the exciton associated transition in wurtzite III-V nitride quantum wells

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	Impact of polarization on quasi-two-dimensional exciton and barrier-width dependence of the exciton associated transition in wurtzite III-V nitride quantum wells
	Wan SP ; Xia JB
刊名	solid state communications
	2002
卷号	122 期号:5 页码:287-292
关键词	quantum wells semiconductors piezoelectricity optical properties OPTICAL-ABSORPTION GAN HETEROSTRUCTURES SPECTROSCOPY CONSTANTS ENERGIES LIFETIME SPECTRA FIELDS INN
ISSN号	0038-1098
通讯作者	wan sp,chinese acad sci,inst semicond,natl lab superlattices & microstruct,pob 912,beijing 100083,peoples r china. 电子邮箱地址: wanshoupu@hotmail.com
中文摘要	excitonic states in alxga1-xn/gan quantum wells (qws) are studied within the framework of effective-mass theory. spontaneous and piezoelectric polarizations are included and their impact on the excitonic states and optical properties are studied. we witnessed a significant blue shift in transition energy when the barrier width decreases and we attributed this to the redistribution of the built-in electric field between well layers and barrier layers. for the exciton the binding energies, we found in narrow qws that there exists a critical value for barrier width, which demarcates the borderline for quantum confinement effect and the quantum confined stark effect. exciton and free carrier radiative lifetimes are estimated by simple argumentation. the calculated results suggest that there are efficient non-radiative mechanisms in narrow barrier qws. (c) 2002 elsevier science ltd. all rights reserved.
学科主题	半导体物理
收录类别	SCI
语种	英语
公开日期	2010-08-12
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/11900]
专题	半导体研究所_中国科学院半导体研究所（2009年前）
推荐引用方式 GB/T 7714	Wan SP,Xia JB. Impact of polarization on quasi-two-dimensional exciton and barrier-width dependence of the exciton associated transition in wurtzite III-V nitride quantum wells[J]. solid state communications,2002,122(5):287-292.
APA	Wan SP,&Xia JB.(2002).Impact of polarization on quasi-two-dimensional exciton and barrier-width dependence of the exciton associated transition in wurtzite III-V nitride quantum wells.solid state communications,122(5),287-292.
MLA	Wan SP,et al."Impact of polarization on quasi-two-dimensional exciton and barrier-width dependence of the exciton associated transition in wurtzite III-V nitride quantum wells".solid state communications 122.5(2002):287-292.