Theory of two species of electron-hole with shallow electron trap transport in photorefractive media

被引:4
|
作者
Li, YQ
Liu, ST
Hong, J
Xu, KB
机构
[1] Department of Applied Physics, Harbin Institute of Technology
关键词
D O I
10.1063/1.364031
中图分类号
O59 [应用物理学];
学科分类号
摘要
A new model of two species of electron-hole with shallow electron trap is presented. The model predicts that if the shallow trap accumulates large density of charge carriers, the photoconductivity can be a sublinear (or superlinear) function of light intensity, and the space-charge field increases (or decreases) and reaches a saturate value as intensity increases depending on the sign of dominant carrier. Comparison this model with previous ones shows that this model provides more common descriptions about photoconductivity and space-charge-field dependence of intensity. (C) 1997 American Institute of Physics.
引用
收藏
页码:1752 / 1757
页数:6
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