Failure analysis of the CdZnTe detector electrode contacts

Abstract

The characteristics of the Au contacts deposited by three different processes before and after accelerating aging tests have been investigated in this paper. The experimental results indicate that the aging tests can cause the degradation of the contact interfacial properties, such as continuities, adhesion strength and ohmic characteristics, especially for the contact interface deposited by the thermal vacuum processing, which would influence the performance of CdZnTe detectors