中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Exciton states in isolated quantum wires

文献类型:期刊论文

作者Xia JB ; Cheah KW
刊名physical review b
出版日期1997
卷号55期号:3页码:1596-1601
关键词POROUS SILICON BINDING-ENERGY WELL WIRES LUMINESCENCE CONFINEMENT PHOTOLUMINESCENCE ABSORPTION EMISSION CENTERS
ISSN号0163-1829
中文摘要the exciton states in isolated and semi-isolated quantum wires are studied. it is found that the image charges have a large effect on the effective coulomb potential in wires. for the isolated wire the effective potential approaches the coulomb potential in vacuum at large z distance. for the semi-isolated wire the effective potential is intermediate between the coulomb potential in vacuum and the screened coulomb potential at large distance. the exciton binding energy in the isolated wire is about ten times larger than that in the quantum well, and that in the semi-isolated wire is also intermediate between those in the isolated wire and in the quantum well. when the lateral width increases the binding energy decreases further, and approaches that in the quantum well. the real valence-band structure is taken into account, the exciton wave functions of the ground state in the zero-order approximation are given, and the reduced mass is calculated. the effect of the coupling between the ground and excited states are considered by the degenerate perturbation method, and it is found the coupling effect is small compared to the binding energy.
学科主题半导体物理
收录类别SCI
语种英语
公开日期2010-11-17
源URL[http://ir.semi.ac.cn/handle/172111/15287]  
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
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Xia JB,Cheah KW. Exciton states in isolated quantum wires[J]. physical review b,1997,55(3):1596-1601.
APA Xia JB,&Cheah KW.(1997).Exciton states in isolated quantum wires.physical review b,55(3),1596-1601.
MLA Xia JB,et al."Exciton states in isolated quantum wires".physical review b 55.3(1997):1596-1601.

入库方式: OAI收割

来源:半导体研究所

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