Thermionic, tunnelling, and polarization currents in zinc oxide varistors

被引：9

作者：

Castro, MS

Aldao, CM

机构：

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 1997年 / 17卷 / 12期

关键词：

D O I：

10.1016/S0955-2219(96)00240-3

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report an analysis of time, voltage, and temperature dependencies for ZnO varistors conductance. The conduction mechanisms proposed to interpret experiments include thermionic, tunnelling, and polarization currents. We analyse here the contributions of these mechanisms to conduction in order to identify their roles. We conclude that a tunnelling current shows the correct trends in the current-temperature curve. Also, capacitance measurements as a function of time and temperature are presented to discuss the influence of interface and deep bulk traps. (C) 1997 Elsevier Science Limited.

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页码：1533 / 1537

页数：5

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