BARRIER VOLTAGE DEFORMATION OF ZNO VARISTORS BY CURRENT PULSE

被引：30

作者：

LEITE, ER

VARELA, JA

LONGO, E

机构：

[1] IO UNESP,ARARAQUARA,SP,BRAZIL

[2] UNIV FED SAO CARLOS,DEPT QUIM,BR-13560 SAO CARLOS,SP,BRAZIL

来源：

JOURNAL OF APPLIED PHYSICS | 1992年 / 72卷 / 01期

关键词：

D O I：

10.1063/1.352175

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The phenomenon of electrical degradation in ZnO varistors was studied by application of high-intensity current pulses. A wave shape of 8 X 20-mu-s and rectangular waves of 1 and 2 ms were used. The degradation was estimated by reference electric-field variation and by Schottky voltage barrier deformation. The results showed that current pulses reduce both the height and the width of the barrier voltage. It was also observed that the donor density N(d) did not change but the surface states density N(s) decreased with degradation.

引用

页码：147 / 150

页数：4

共 17 条

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[2]

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