Characteristics of photoconductivity in As-Sb-Se glasses

被引：0
|
作者：
G Mathew
J Philip
机构：
[1] Cochin University of Science and Technology,Department of Instrumentation
来源：
Pramana | 1999年 / 53卷
关键词：
Photoconductivity; chalcogenide glasses; 72.40; 72.80.N;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Characteristic features of photoconductivity in AsxSb15Se85−x and AsxSb10Se90−x bulk glass systems have been measured and reported. Both a.c and d.c techniques have been employed for the measurements. The temperature dependence of photoconductivity has been analysed in terms of the ABFH model and both systems are found to exhibit type I photoconductivity. Photoconductivity shows a clear change in slope corresponding to the stoichiometric composition in both the systems. The composition dependence of photoconductivity is explained on the basis of chemically ordered covalent network (COCN) model. Photoconductivity response time of the two systems have been determined from frequency-resolved photocurrent (FRPC) measurements. Variation of response time with composition exhibits a clear change in slope at the stoichiometric composition in both the systems.
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页码：891 / 902
页数：11
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