HIGH FIELD CONDUCTION IN AMORPHOUS Se70Te30-xZnx THIN FILMS

被引：0
|
作者：
Ji, Krishna [1 ]
Shukla, R. K. [1 ]
Agnihotri, A. K. [2 ]
Kumar, A. [1 ]
机构：
[1] Harcourt Butler Technol Inst, Dept Phys, Kanpur 208002, Uttar Pradesh, India
[2] BND Coll, Dept Phys, Kanpur, Uttar Pradesh, India
来源：
JOURNAL OF OVONIC RESEARCH | 2008年 / 4卷 / 06期
关键词：
Chalcogenide glasses; Localized states; High field conduction; Space charge limited conduction;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The present paper reports the d. c. conductivity measurements at high electric fields in vacuum evaporated thin films of amorphous Se70Te30-xZnx. Current - voltage (I-V) characteristics have been measured at various fixed temperatures. In all the samples, at low electric fields, ohmic behavior is observed. However, at high electric fields, non ohmic behavior is observed. The experimental data fits well with the theory of space charge limited conduction (SCLC) in the high electric field region. From the fitting of the data, the density of defect states near Fermi level is calculated. Composition dependence of DOS is discussed in the paper.
引用
收藏
页码：123 / 127
页数：5
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