Energy spectra of an exciton bound to a charged impurity in quantum dots

被引：2
|
作者：
Xie, WF [1 ]
机构：
[1] Guangzhou Univ, Dept Phys, Guangzhou 510405, Peoples R China
来源：
SOLID STATE COMMUNICATIONS | 2002年 / 122卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
quantum dot; exciton complex;
D O I：
10.1016/S0038-1098(02)00031-5
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The energies of the low-lying states for an exciton (X) trapped in a two-dimensional quantum dot by a charged impurity are calculated by using the method of few-body physics. This configuration is called a (D+,X) center or a (A(-),X) center. The dependences of the energies of the low-lying states of the (D+,X) and the (A(-),X) centers on the electron-to-hole mass ratio sigma, the dot radius R and the dot thickness are obtained. We compare our results with those of X+ and X-. (C) 2002 Published by Elsevier Science Ltd.
引用
收藏
页码：95 / 98
页数：4
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