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Proceedings Paper

Effects of thermal annealing on the structural properties of CdZnTe crystals
Author(s): G. Yang; A. E. Bolotnikov; P. M. Fochuk; Y. Cui; G. S. Camarda; A. Hossain; K. H. Kim; J. Horace; B. McCall; R. Gul; O. V. Kopach; S. U. Egarievwe; R. B. James
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Paper Abstract

Although cadmium zinc telluride (CZT) is one of leading materials for fabricating room-temperature nuclear-radiation- detectors, different defects in the crystals can degrade the performance of CZT detectors. Post-growth thermal annealing potentially offers a satisfactory way to eliminate the deleterious influence of these defects. Here, we report that the annealing of CZT in Cd vapor effectively lowers the density of Te inclusions. It takes a much longer annealing time to eliminate separate large Te inclusions than small ones; however, the annealing time is greatly reduced when the large Te inclusions are distributed along grain boundaries. We found that sub-grain boundaries still exist after the annealing at 500 °C, indicating that a higher annealing temperature might be needed.

Paper Details

Date Published: 28 September 2011
PDF: 6 pages
Proc. SPIE 8142, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII, 814217 (28 September 2011); doi: 10.1117/12.894961
Show Author Affiliations
G. Yang, Brookhaven National Lab. (United States)
A. E. Bolotnikov, Brookhaven National Lab. (United States)
P. M. Fochuk, Brookhaven National Lab. (United States)
Yuriy Fedkovych Chernivtsi National Univ. (Ukraine)
Y. Cui, Brookhaven National Lab. (United States)
G. S. Camarda, Brookhaven National Lab. (United States)
A. Hossain, Brookhaven National Lab. (United States)
K. H. Kim, Brookhaven National Lab. (United States)
J. Horace, Brookhaven National Lab. (United States)
Alabama A&M Univ. (United States)
B. McCall, Brookhaven National Lab. (United States)
Alabama A&M Univ. (United States)
R. Gul, Brookhaven National Lab. (United States)
O. V. Kopach, Brookhaven National Lab. (United States)
Yuriy Fedkovych Chernivtsi National Univ. (Ukraine)
S. U. Egarievwe, Brookhaven National Lab. (United States)
Alabama A&M Univ. (United States)
R. B. James, Brookhaven National Lab. (United States)


Published in SPIE Proceedings Vol. 8142:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII
Larry A. Franks; Ralph B. James; Arnold Burger, Editor(s)

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