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

页码：95 / 98

页数：4

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