The X- and gamma-ray detection properties of CsPbBr3 perovskite crystals grown by the Bridgman–Stockbarger method

IF 1.5 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment Pub Date : 2025-02-07 DOI:10.1016/j.nima.2025.170305

N. Grundmanis , A. Sarakovskis , A. Lupilov , V. Gostilo , A. Owens , K. Pudzs

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Abstract

In this paper we present the results of measurements on CsPbBr₃ perovskite crystals grown by the Bridgman-Stockbarger method which have shown promise as X- and gamma-ray detection media. The crystal structure, trap concentration (3.45 × 10¹⁰ cm⁻³), specific resistivity (1.5 × 10⁹ Ω cm) and other electrophysical characteristics which determine the spectrometric performance were examined. The X- and gamma-ray performance of planar, hemispherical and ring test detectors based on CsPbBr₃ crystals of dimensions of 5.0 × 5.0 × 3.0 mm³ were evaluated. The energy resolution of the detector with ring electrodes measured using standard ²⁴¹Am, ⁵⁷Co and ¹³⁷Cs and ⁶⁰Co radioactive sources was: 2.3 keV (16%) at 14.0 keV; 2.7 keV (4.5%) at 59.5 keV; 12.0 keV (1.8%) at 662 keV and 18.6 keV (1.4%) at 1332 keV. The measured hole mobility-lifetime products (μτ) were as high as 3 × 10⁻³ cm²/V.

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来源期刊

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment 物理-光谱学

CiteScore

3.20

自引率

21.40%

发文量

787

审稿时长

1 months

期刊介绍： Section A of Nuclear Instruments and Methods in Physics Research publishes papers on design, manufacturing and performance of scientific instruments with an emphasis on large scale facilities. This includes the development of particle accelerators, ion sources, beam transport systems and target arrangements as well as the use of secondary phenomena such as synchrotron radiation and free electron lasers. It also includes all types of instrumentation for the detection and spectrometry of radiations from high energy processes and nuclear decays, as well as instrumentation for experiments at nuclear reactors. Specialized electronics for nuclear and other types of spectrometry as well as computerization of measurements and control systems in this area also find their place in the A section. Theoretical as well as experimental papers are accepted.