The research of package for CdZnTe detector based on the capacitive Frisch grid structure

Kai-feng Qin; Lin-jun Wang; Jia-hua Min; Jianyong Teng; Zhu-bin Shi; Chen-ying Zhou; Ji-jun Zhang; Jian Huang; Yiben Xia

doi:10.1117/12.836279

4 August 2009 The research of package for CdZnTe detector based on the capacitive Frisch grid structure

Kai-feng Qin, Lin-jun Wang, Jia-hua Min, Jianyong Teng, Zhu-bin Shi, Chen-ying Zhou, Ji-jun Zhang, Jian Huang, Yiben Xia

Author Affiliations +

Proceedings Volume 7385, International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications; 73851Q (2009) https://doi.org/10.1117/12.836279
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

Abstract

In this paper, the design and fabrication of a capacitive Frisch grid structure for CdZnTe (CZT) detector were investigated. The aging tests were first used to investigate the degradation of the mechanical and electrical characteristics of the CdZnTe detector based on the capacitive frisch grid structure. The effects of the degradation on the performance of CdZnTe detectors were investigated by scanning acoustic microscopy (SAM) test, current-voltage test, and multichannel pulse-height spectrum analysis. In particular, a passivation layer obtained by a two-step passivation processing, combined with a Teflon tape, was used as an insulated layer of the capacitive Frisch grid detector, improving its stability effectively at high voltages. However, further improvements in material and device fabrication (including insulated layer) were required to realize the potential of CZT detectors with the capacitive Frisch grid structure.

Citation Download Citation

Kai-feng Qin, Lin-jun Wang, Jia-hua Min, Jianyong Teng, Zhu-bin Shi, Chen-ying Zhou, Ji-jun Zhang, Jian Huang, and Yiben Xia "The research of package for CdZnTe detector based on the capacitive Frisch grid structure", Proc. SPIE 7385, International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications, 73851Q (4 August 2009); https://doi.org/10.1117/12.836279

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