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

IF 1.4 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 : 2025-04-01 Epub 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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Bridgman-Stockbarger法生长CsPbBr3钙钛矿晶体的X射线和伽马射线探测特性

本文介绍了用Bridgman-Stockbarger方法生长的CsPbBr3钙钛矿晶体的测量结果，该晶体已显示出作为X射线和伽马射线探测介质的前景。考察了晶体结构、陷阱浓度（3.45 × 1010 cm−3）、比电阻率（1.5 × 109 Ω cm）和其他决定光谱性能的电物理特性。对尺寸为5.0 × 5.0 × 3.0 mm3的CsPbBr3晶体的平面、半球形和环形测试探测器的X射线和伽马射线性能进行了评价。采用标准241Am、57Co、137Cs和60Co放射源测得的环形电极探测器能量分辨率为：14.0 keV时2.3 keV (16%)；59.5 keV时2.7 keV (4.5%)；12.0 keV（1.8%）在662 keV和18.6 keV（1.4%）在1332 keV。测得的空穴迁移寿命产物μτ高达3 × 10−3 cm2/V。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.