In:
Applied Physics Letters, AIP Publishing, Vol. 110, No. 18 ( 2017-05-01)
Abstract:
The conducting mechanism of ZnO varistors under the steady state has been well documented, but the corresponding time-dependent property was rarely studied. In this work, we proposed a physical model for analyzing the conducting behavior of a single ZnO grain boundary under pure ac fields. The established model mainly deals with the time-delay effect of the interfacial charge and its influence on the barrier height as well as the conducting process, which leads to a phase shift of the conduction current in advance of the applied voltage and an enhancement of the effective capacitance. To validate the model, the nonlinear conducting characteristics of ZnO varistors under pure ac fields were measured and the result agreed well with the model.
Type of Medium:
Online Resource
ISSN:
0003-6951
,
1077-3118
Language:
English
Publisher:
AIP Publishing
Publication Date:
2017
detail.hit.zdb_id:
211245-0
detail.hit.zdb_id:
1469436-0
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