An Exciton Bound to a Neutral Donor in Quantum Dots
XIE Wen-Fang
Department of Physics, Guangzhou University, Guangzhou 510405
Department of Physics, Shanxi University, Taiyuan 030006
An Exciton Bound to a Neutral Donor in Quantum Dots
XIE Wen-Fang
Department of Physics, Guangzhou University, Guangzhou 510405
Department of Physics, Shanxi University, Taiyuan 030006
关键词 ：
73.20.Dx ,
71.35.Gg
Abstract ： The binding energies for an exciton (X) trapped in a two-dimensional quantum dot by a neutral donor have been calculated by using the method of few-body physics for the heavy hole (σ = 0.196) and the light hole (σ =0.707). We find that the (D0 ,X) complex confined in a quantum dot has in general a larger binding energy than those in a two-dimensional quantum well and a three-dimensional bulk semiconductor, and the binding energy increases with decrease of the dot radius. At dot radius R → ∞, we compare our calculated result with the previous results.
Key words ：
73.20.Dx
71.35.Gg
出版日期: 2002-05-01
[1]
XIE Wen-Fang. Ground State of a Two-Electron Quantum Dot with a Gaussian Confining Potential
[2]
WANG Zhi-Ping;LIANG Xi-Xia;. Polaron Energy and Effective Mass in Parabolic Quantum Wells
[3]
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[4]
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[5]
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[6]
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[7]
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[8]
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[9]
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[10]
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[11]
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[12]
K. Afif;A. Benyoussef;J. Diouri
. Auto-correlation Effects on the sp3 -d Exchange Interaction in Cd1-x Mnx Te/CdTe Multilayers
[13]
DAI Zhen-Hong;;SUN Jin-Zuo;ZHANG Li-De;LI Zuo-Hong;HUANG Shi-Yong;SUI Peng-Fei;. Electron States of Few-Electron Quantum Dots
[14]
ZOU Bing-Suo;WU Zhen-Yu;CAO Li;DAI Jian-Hua;ZHANG Ze-Bo;NIE Yu-Xin;XIE Si-Shen. Core-Shell Structure and Photoluminescence of CdS Quantum Dots
[15]
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2002, Vol. 19 
