Heavy metal ternary halides for room-temperature x-ray and gamma-ray detection

Zhifu Liu, John A. Peters, Constantinos C. Stoumpos, Maria Sebastian, Bruce W. Wessels, Jino Im, Arthur J. Freeman, Mercouri G. Kanatzidis

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

20 Citations (Scopus)

Abstract

We report our recent progress on wide bandgap ternary halide compounds CsPbBr3 and CsPbCl3 for room temperature x-ray and gamma-ray detectors. Their bandgaps are measured to be 2.24 eV and 2.86 eV, respectively. The measured mobility-lifetime products of CsPbBr3 are 1.7×10-3, 1.3×10-3 cm2/V, for electron and hole carriers, respectively, comparable to those of CdTe. We measured the room temperature spectral response of CsPbBr3 sample to Ag x-ray radiation. It has a well-resolved spectral response to the 22.4 keV Kα radiation peak and detector efficiency comparable to that of CdZnTe detector at 295 K.

Original languageEnglish
Title of host publicationHard X-Ray, Gamma-Ray, and Neutron Detector Physics XV
DOIs
Publication statusPublished - Nov 8 2013
EventSPIE Conference on Hard X-Ray, Gamma-Ray and Neutron Detector Physics XV - San Diego, CA, United States
Duration: Aug 26 2013Aug 28 2013

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8852
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherSPIE Conference on Hard X-Ray, Gamma-Ray and Neutron Detector Physics XV
CountryUnited States
CitySan Diego, CA
Period8/26/138/28/13

Keywords

  • Cs-compound
  • photoconductivity
  • wide gap semiconductor
  • x-ray detector

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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  • Cite this

    Liu, Z., Peters, J. A., Stoumpos, C. C., Sebastian, M., Wessels, B. W., Im, J., Freeman, A. J., & Kanatzidis, M. G. (2013). Heavy metal ternary halides for room-temperature x-ray and gamma-ray detection. In Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XV [88520A] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8852). https://doi.org/10.1117/12.2022877