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

K. H. Kim, A. E. Bolotnikov, G. S. Camarda, L. Marchini, G. Yang, A. Hossain, Y. Cui, L. Xu, R. B. James

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

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.

Original languageEnglish
Title of host publicationHard X-Ray, Gamma-Ray, and Neutron Detector Physics XII
DOIs
Publication statusPublished - 2010
Externally publishedYes
EventHard X-Ray, Gamma-Ray, and Neutron Detector Physics XII - San Diego, CA, United States
Duration: 2010 Aug 22010 Aug 4

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7805
ISSN (Print)0277-786X

Other

OtherHard X-Ray, Gamma-Ray, and Neutron Detector Physics XII
CountryUnited States
CitySan Diego, CA
Period10/8/210/8/4

Keywords

  • CdMnTe
  • CdZnTe
  • Passivation
  • ammonium sulfide
  • leakage current

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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