Correlation of dislocations and Te inclusions in detector-grade
CdZnTe crystals grown by MVB method

Yadong Xu; Yihui He; Lingyan Xu; Tao Wang; Gangqiang Zha; Wanqi Jie

doi:10.1117/12.928176

24 October 2012 Correlation of dislocations and Te inclusions in detector-grade CdZnTe crystals grown by MVB method

Yadong Xu, Yihui He, Lingyan Xu, Tao Wang, Gangqiang Zha, Wanqi Jie

Proceedings Volume 8507, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIV; 850710 (2012) https://doi.org/10.1117/12.928176
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

Abstract

We have developed the detached Bridgman process for growth of CdZnTe crystals. Detachment of the solidification interface from the growth ampoule results in a low density of dislocations in the grown material and large single crystal grains. The detached Bridgman process also provides for direct control of the melt composition close to the growth front, allowing for accurate control of both the density of the Te/Cd precipitates as well as the majority carrier concentration in the grown material. The influence of melt-composition control and compensation by shallow and deep donors on detector performance is presented.

Citation Download Citation

Yadong Xu, Yihui He, Lingyan Xu, Tao Wang, Gangqiang Zha, and Wanqi Jie "Correlation of dislocations and Te inclusions in detector-grade CdZnTe crystals grown by MVB method", Proc. SPIE 8507, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIV, 850710 (24 October 2012); https://doi.org/10.1117/12.928176

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