Urbach energy and the tails of the density of states in amorphous semiconductors

被引：0
|
作者：
S. Zaynobidinov
R. G. Ikramov
R. M. Jalalov
机构：
[1] Andijan State University,
[2] Namangan State University,undefined
来源：
Journal of Applied Spectroscopy | 2011年 / 78卷
关键词：
amorphous semiconductors; electron density of state distribution; Kubo–Greenwood formula; Davis–Mott approximation; types of electronic optical transitions; absorption spectrum; Urbach energy;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Formulas are derived for the Urbach energy as a function of the parameters controlling the slope of the exponential tails in the valence and conduction bands of amorphous semiconductors. It is shown that the Urbach energy remains constant, even if one of these parameters varies over a wide range.
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收藏
页码：223 / 227
页数：4
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