Alloying effect in the III-As-Sb ternary systems

被引:12
作者
Belabbes, A.
Zaoui, A.
Ferhat, M.
机构
[1] Univ Sci & Technol Lille, LML Polytech Lille, F-59655 Villeneuve Dascq, France
[2] USTO, Dept Phys, Oran, Algeria
来源
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2007年 / 137卷 / 1-3期
关键词
ab initio calculations; alloy; bowing;
D O I
10.1016/j.mseb.2006.11.017
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
First-principles pseudopotential plane-wave calculations are used to investigate the alloying effect on the structural and electronic properties of cubic arsenides antimonides III-As-Sb alloys. The focus is on the determination of the variation of the lattice parameter and the optical gap bowing of these alloys. We found that the Vegard's law almost perfectly met the variation of the lattice parameter. The calculated bowing parameter of the optical band gap, i.e. the nonlinearity noticed in the variation, is in agreement with the previous theoretical and experimental works. Results show that the bowing parameter of the III-As-Sb alloys has a remarkable contribution due to the structural relaxation effects and a relatively weak charge transfer effect. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:210 / 212
页数:3
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