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Proceedings Paper

Crystal growth of CdZnTeSe (CZTS) gamma detectors: a promising alternative to CdZnTe (Conference Presentation)

Paper Abstract

Alloying of CdZnTe (CZT) with selenium has been found to be very promising and effective in reducing the overall concentration of secondary phases (Te precipitates/inclusions) and sub-grain boundary networks in the crystals. These two types of defects are the main causes for incomplete charge collection, and hence they affect the yield of high-quality CZT, resulting in a very high cost for large-volume, high-quality detector-grade CZT detectors. The addition of selenium was also found to very effective in increasing the compositional homogeneity along the growth direction of the CdZnTeSe (CZTS) ingots grown by the traveling heater method (THM) technique. The compositional homogeneity along the growth direction can enhance the overall yield of detector-grade CZTS, which should therefore be possible to produce at a lower cost compared to CZT. The electrical properties and detector performance of the CZTS crystals will be presented and discussed.

Paper Details

Date Published: 11 October 2017
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Proc. SPIE 10392, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIX, 103920Y (11 October 2017); doi: 10.1117/12.2276955
Show Author Affiliations
Utpal N. Roy, Brookhaven National Lab. (United States)
Giuseppe S. Camarda, Brookhaven National Lab. (United States)
Yonggang Cui, Brookhaven National Lab. (United States)
Rubi Gul, Brookhaven National Lab. (United States)
Ge Yang, Brookhaven National Lab. (United States)
Anwar Hossain, Brookhaven National Lab. (United States)
Ralph B. James, Savannah River National Lab. (United States)
Jakub Zazvorka, Charles Univ. in Prague (United States)
Václav Dedic, Charles Univ. in Prague (Czech Republic)
Jan Franc, Charles Univ. in Prague (Czech Republic)
Vincenzo Lordi, Lawrence Livermore National Lab. (United States)
Joel B. Varley, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 10392:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIX
Arnold Burger; Ralph B. James; Michael Fiederle; Larry Franks; Stephen A. Payne, Editor(s)

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