DIRECT DETERMINATION OF BARRIER VOLTAGE IN ZNO VARISTORS

被引:74
作者
VANKEMENADE, JTC
EIJNTHOVEN, RK
机构
[1] Philips Research Laboratories, Eindhoven
关键词
D O I
10.1063/1.326015
中图分类号
O59 [应用物理学];
学科分类号
摘要
Single barriers in a ZnO varistor are measured separately. The step voltage at a grain boundary is 3.6 V at 1 μA. No great differences could be found between samples obtained from several suppliers. In a SEM the barriers could be detected by the voltage-contrast method. By using electron-beam-induced currents the spots where current is flowing may be located.
引用
收藏
页码:938 / 941
页数:4
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