Spatially separated excitons in quantum-dot quantum well structures

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	Spatially separated excitons in quantum-dot quantum well structures
	Chang K ; Xia JB
刊名	physical review b
	1998
卷号	57 期号:16 页码:9780-9786
关键词	CDS/HGS/CDS CRYSTALLITES CDS CONFINEMENT ABSORPTION CLUSTERS ELECTRON STATES ZNS
ISSN号	0163-1829
通讯作者	chang k,chinese acad sci,inst semicond,natl lab superlattices & microstruct,pob 912,beijing 100083,peoples r china.
中文摘要	in the framework of the effective-mass envelope-function theory, the electronic and optical properties of a spherical core-shell quantum-dot quantum well (qdqw) structure with one and two wells have been investigated. the results show that the energies of electron and hole states depend sensitively on the well thickness and core radius of quantum-dot quantum well structure. an interesting spatially separated characteristic of electron and hole in qdqw is found and enhanced significantly in the two-wells case. the normalized oscillator strength for the optical transition between the electron and hole states in qdqw exhibits a deep valley at some special well thickness. the coulomb interaction between the electron and hole is also taken into account. [s0163-1829(98)02412-6].
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/172111/13216]
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	Chang K,Xia JB. Spatially separated excitons in quantum-dot quantum well structures[J]. physical review b,1998,57(16):9780-9786.
APA	Chang K,&Xia JB.(1998).Spatially separated excitons in quantum-dot quantum well structures.physical review b,57(16),9780-9786.
MLA	Chang K,et al."Spatially separated excitons in quantum-dot quantum well structures".physical review b 57.16(1998):9780-9786.