硫化锌薄膜带间光导边

M. Arsalane, A. Tosser
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引用次数: 2

摘要

在ZnS溅射薄膜中,带隙下能量的光(不超过0.22 eV)诱导了类似于光跃迁效应的光伏现象。提出了热电子可能从光离库仑中心逸出,在浅阱分布范围内向某一能级移动。厚度相关现象证实了库仑中心密度较高的临界厚度的存在。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Interband photoconduction edge in zinc sulphide thin films
Photovoltaic phenomena similar to phototransition effects are induced in ZnS sputtered films by light of energy beneath the band-gap (not more than 0.22 eV). It is advanced that hot electron may escape from the photoionized coulombic centre and moves to some level within shallow traps distribution. Thickness dependent phenomena confirm the existence of a critical thickness in which the density of coulombic centres is higher.
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