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Proceedings Paper

Heavy metal ternary halides for room-temperature x-ray and gamma-ray detection
Author(s): Zhifu Liu; John A. Peters; Constantinos C. Stoumpos; Maria Sebastian; Bruce W. Wessels; Jino Im; Arthur J. Freeman; Mercouri G. Kanatzidis
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Paper 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.

Paper Details

Date Published: 26 September 2013
PDF: 7 pages
Proc. SPIE 8852, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XV, 88520A (26 September 2013); doi: 10.1117/12.2022877
Show Author Affiliations
Zhifu Liu, Northwestern Univ. (United States)
John A. Peters, Northwestern Univ. (United States)
Constantinos C. Stoumpos, Northwestern Univ. (United States)
Argonne National Lab. (United States)
Maria Sebastian, Northwestern Univ. (United States)
Bruce W. Wessels, Northwestern Univ. (United States)
Jino Im, Northwestern Univ. (United States)
Arthur J. Freeman, Northwestern Univ. (United States)
Mercouri G. Kanatzidis, Northwestern Univ. (United States)
Argonne National Lab. (United States)

Published in SPIE Proceedings Vol. 8852:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XV
Michael Fiederle; Arnold Burger; Larry Franks; Ralph B. James, Editor(s)

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