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Proceedings Paper

Characterization of detector grade CdZnTe material from Redlen Technologies
Author(s): Martine C Duff; Arnold Burger; Michael Groza; Vladimir Buliga; John P. Bradley; Zurong R. Dai; Nick Teslich; Salah A Awadalla; Jason Mackenzie; Henry Chen
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Paper Abstract

CdZnTe (or CZT) crystals can be used in a variety of detector-type applications. This large band gap material shows great promise for use as a gamma radiation spectrometer. Historically, the performance of CZT has typically been adversely affected by point defects, structural and compositional heterogeneities within the crystals, such as twinning, pipes, grain boundaries (polycrystallinity) and secondary phases (SP). The synthesis of CZT material has improved greatly with the primary performance limitation being attributed to mainly SP. In this presentation, we describe the extensive characterization of detector grade material that has been treated with post growth annealing to remove the SPs. Some of the analytical methods used in this study included polarized, cross polarized and transmission IR imaging, I-V curves measurements, synchrotron X-ray topography and electron microscopy.

Paper Details

Date Published: 4 September 2008
PDF: 15 pages
Proc. SPIE 7079, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics X, 70790T (4 September 2008); doi: 10.1117/12.798921
Show Author Affiliations
Martine C Duff, Savannah River National Lab. (United States)
Arnold Burger, Fisk Univ. (United States)
Michael Groza, Fisk Univ. (United States)
Vladimir Buliga, Fisk Univ. (United States)
John P. Bradley, Lawrence Livermore National Lab. (United States)
Zurong R. Dai, Lawrence Livermore National Lab. (United States)
Nick Teslich, Lawrence Livermore National Lab. (United States)
Salah A Awadalla, Redlen Technologies (Canada)
Jason Mackenzie, Redlen Technologies (Canada)
Henry Chen, Redlen Technologies (Canada)

Published in SPIE Proceedings Vol. 7079:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics X
Arnold Burger; Larry A. Franks; Ralph B. James, Editor(s)

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