Pseudopotential calculations of Cd1-xZnxTe:: Energy gaps and dielectric constants

被引：78

作者：

Bouarissa, Nadir ^{[1
]}

机构：

[1] King Khalid Univ, Fac Sci, Dept Phys, Abha, Saudi Arabia

来源：

PHYSICA B-CONDENSED MATTER | 2007年 / 399卷 / 02期

关键词：

pseudopotentials; CdZnTe; electronic structure; optical properties;

D O I：

10.1016/j.physb.2007.05.034

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this paper we present a study of the energy gaps, dielectric constants and their composition dependence in zinc-blende Cd1-x,ZnxTe over the entire composition range (x from 0 to 1) at room temperature using pseudopotential formalism under a modified virtual crystal approximation which takes into account the effect of compositional disorder. It is showed that the theoretical model must include disorder effects in order to get a meaningful agreement with experiment. The theoretical expression which describes the compositional dependence of the fundamental energy gap is in good agreement with that observed by Tobin et al. [J. Electron. Mater. 24 (1995) 697]. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：126 / 131

页数：6

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