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Proceedings Paper

Detector performance of ammonium-sulfide-passivated CdZnTe and CdMnTe materials
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Paper Abstract

Dark currents, including those in the surface and bulk, are the leading source of electronic noise in X-ray and gamma detectors, and are responsible for degrading a detector's energy resolution. The detector material itself determines the bulk leakage current; however, the surface leakage current is controllable by depositing appropriate passivation layers. In previous research, we demonstrated the effectiveness of surface passivation in CZT (CdZnTe) and CMT (CdMnTe) materials using ammonium sulfide and ammonium fluoride. In this research, we measured the effect of such passivation on the surface states of these materials, and on the performances of detectors made from them.

Paper Details

Date Published: 27 August 2010
PDF: 6 pages
Proc. SPIE 7805, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XII, 78051U (27 August 2010); doi: 10.1117/12.861543
Show Author Affiliations
K. H. Kim, Brookhaven National Lab. (United States)
A. E. Bolotnikov, Brookhaven National Lab. (United States)
G. S. Camarda, Brookhaven National Lab. (United States)
L. Marchini, Brookhaven National Lab. (United States)
IMEM-CNR (Italy)
G. Yang, Brookhaven National Lab. (United States)
A. Hossain, Brookhaven National Lab. (United States)
Y. Cui, Brookhaven National Lab. (United States)
L. Xu, Brookhaven National Lab. (United States)
Northwestern Polytechnical Univ. (China)
R. B. James, Brookhaven National Lab. (United States)


Published in SPIE Proceedings Vol. 7805:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XII
Arnold Burger; Larry A. Franks; Ralph B. James, Editor(s)

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