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Gamma-ray Spectra from a 3x3 CsPbBr3 Array

Journal Article · · IEEE Conference Record - Nuclear Science Symposium & Medical Imaging Conference (Online)
 [1];  [2];  [2];  [2];  [3];  [3];  [2]
  1. Radiation Monitoring Devices, Inc., Watertown, MA (United States); Radiation Monitoring Devices, Inc.
  2. Radiation Monitoring Devices, Inc., Watertown, MA (United States)
  3. Northwestern Univ., Evanston, IL (United States)
+ Show Author Affiliations

CsPbBr3 is a promising semiconductor material for X- and γ-ray detection at room temperature due to a wide bandgap of 2.3eV, high stopping power, and relatively high mobility-lifetime products of electrons and holes, and the capability of growing large crystals. In this paper we report on fabrication and testing of a 3.8 mm thick, 3 X 3 array with 1.2 mm pitch. Raw137Cs spectra were acquired with applied bias of 400 V, 500 V, and 600 V. Energy resolution of between 2 and 3 % FWHM at 662 keV was obtained from most pixels without any correction at room temperature. After 15 days under continuous bias at 600 V, no polarization effects were observed.

Research Organization:
Radiation Monitoring Devices, Inc., Watertown, MA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0020039
OSTI ID:
1894941
Journal Information:
IEEE Conference Record - Nuclear Science Symposium & Medical Imaging Conference (Online), Journal Name: IEEE Conference Record - Nuclear Science Symposium & Medical Imaging Conference (Online); ISSN 1082-3654; ISSN 2577-0829
Publisher:
IEEECopyright Statement
Country of Publication:
United States
Language:
English

References (10)

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Crystal Structure and Photoconductivity of Cæsium Plumbohalides journal November 1958
High spectral resolution of gamma-rays at room temperature by perovskite CsPbBr3 single crystals journal April 2018
CsPbBr3 perovskite detectors with 1.4% energy resolution for high-energy γ-rays journal December 2020
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Quantification of the Conditioning Phase in Cooled Pixelated TlBr Detectors journal August 2015
Optimization of virtual Frisch-grid CdZnTe detector designs for imaging and spectroscopy of gamma rays conference September 2007
Thallium Bromide Gamma-Ray Spectrometers and Pixel Arrays journal March 2020

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Related Subjects

36 MATERIALS SCIENCE
CsPbBr3
Perovskite
Polarization effect
semiconductor gamma-ray detector
Small pixel effect