High-temperature treatment of In-doped CZT crystals
grown by the high-pressure Bridgman method

P. Fochuk; I. Nakonechnyi; O. Kopach; Ye. Verzhak; O. Panchuk; V. Komar; Igor Terzin; Vladimir Kutnij; A. Rybka; Yevhen Nykoniuk; A. E. Bolotnikov; G. C. Camarda; Y. Cui; A. Hossain; K. H. Kim; G. Yang; R. B. James

doi:10.1117/12.929035

24 October 2012 High-temperature treatment of In-doped CZT crystals grown by the high-pressure Bridgman method

P. Fochuk, I. Nakonechnyi, O. Kopach, Ye. Verzhak, O. Panchuk, V. Komar, Igor Terzin, Vladimir Kutnij, A. Rybka, Yevhen Nykoniuk, A. E. Bolotnikov, G. C. Camarda, Y. Cui, A. Hossain, K. H. Kim, G. Yang, R. B. James

Author Affiliations +

Proceedings Volume 8507, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIV; 85071L (2012) https://doi.org/10.1117/12.929035
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

Abstract

We evaluated the effect of high-temperature treatment of Cd0.9Zn0.1Te:In single crystals using Hall-effect measurements, medium- and high-temperature annealing under various deviations from stoichiometry, and infra-red (IR) transmission microscopy Annealing at ~730 K sharply increased the electrical conductivity (by ~1-2 orders-of-magnitude). Plots of the temperature- and cadmium-pressure dependences of the electrical conductivity, carrier concentration, and mobility were obtained. Treating previously annealed Cd-samples under a Te overpressure at 1070 K allowed us to restore their resistance to its initial high values. The main difference in comparing this material with CdTe was its lowered electron density. We explained our results within the framework of Kröger’s theory of quasi-chemical reactions between point defects in solids.

Citation Download Citation

P. Fochuk, I. Nakonechnyi, O. Kopach, Ye. Verzhak, O. Panchuk, V. Komar, Igor Terzin, Vladimir Kutnij, A. Rybka, Yevhen Nykoniuk, A. E. Bolotnikov, G. C. Camarda, Y. Cui, A. Hossain, K. H. Kim, G. Yang, and R. B. James "High-temperature treatment of In-doped CZT crystals grown by the high-pressure Bridgman method", Proc. SPIE 8507, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIV, 85071L (24 October 2012); https://doi.org/10.1117/12.929035

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