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

doi:10.1117/12.2022877

26 September 2013 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

Author Affiliations +

Proceedings Volume 8852, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XV; 88520A (2013) https://doi.org/10.1117/12.2022877
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

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 K_α radiation peak and detector efficiency comparable to that of CdZnTe detector at 295 K.

Citation Download Citation

Zhifu Liu, John A. Peters, Constantinos C. Stoumpos, Maria Sebastian, Bruce W. Wessels, Jino Im, Arthur J. Freeman, and Mercouri G. Kanatzidis "Heavy metal ternary halides for room-temperature x-ray and gamma-ray detection", Proc. SPIE 8852, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XV, 88520A (26 September 2013); https://doi.org/10.1117/12.2022877

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