A modified simplified coherent potential approximation model of band gap energy of III-V ternary alloys

被引：8

作者：

Zhao ChuanZhen ^{[1
,2
]}

Zhang Rong ^{[1
]}

Liu Bin ^{[1
]}

Fu DeYi ^{[1
]}

Li Ming ^{[1
]}

Xiu XiangQian ^{[1
]}

Xie ZiLi ^{[1
]}

Zheng YouDou ^{[1
]}

机构：

[1] Nanjing Univ, Sch Elect Sci & Engn, Jiangsu Prov Key Lab Adv Photon & Elect Mat, Nanjing 210093, Jiangsu, Peoples R China

[2] Tianjin Polytech Univ, Sch Elect & Informat Engn, Tianjin 300160, Peoples R China

来源：

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2012年 / 55卷 / 03期

基金：

中国国家自然科学基金;

关键词：

band gap energy; coherent potential approximation; ternary alloys; CHEMICAL-VAPOR-DEPOSITION; COMPOUND SEMICONDUCTORS; SPECTROSCOPY; PARAMETERS; EDGE;

D O I：

10.1007/s11433-012-4636-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Based on the modification of the simplified coherent potential approximation ( SCPA), a model is developed to calculate the composition dependence of the band gap energy of III-V ternary alloys with the same anion. The derived equation is used to fit the experimental band gap energy of InxAl1-xN, InxGa1-xN and AlxGa1-xN with x from 0 to 1. It is found that the fitting results are better than those done by using SCPA. The fitting results are also better than those obtained by using the formula with a small bowing coefficient, especially for InxAl1-xN. In addition, our model can also be used to describe the composition dependence of band gap energy of other III-V ternary alloys.

引用

页码：400 / 403

页数：4

共 21 条

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