探测器
材料科学
X射线
X射线探测器
阻止力
辐照
结晶
衰减系数
吸收(声学)
单晶
分析化学(期刊)
带隙
钙钛矿(结构)
离子
Crystal(编程语言)
光电子学
光学
结晶学
物理
化学
核物理学
复合材料
热力学
程序设计语言
色谱法
量子力学
计算机科学
作者
Beomjun Park,Ju-Young Ko,Jangwon Byun,Sandeep Pandey,Byungdo Park,Jeongho Kim,Man−Jong Lee
标识
DOI:10.1016/j.jallcom.2024.173717
摘要
Perovskite X-ray detectors are actively investigated because of their exceptional properties, including their significant attenuation coefficient, low defect density, excellent transport characteristics, easy growth, and high sensitivity to X-ray photons. However, perovskite-based high-energy X-ray detectors on the MeV scale are rarely explored. In this study, we investigate the optoelectronic characteristics and radiation detection capabilities of triple-cation Cs0.05FA0.9MA0.05PbI3 single crystals (CSC) grown using the inverse temperature crystallization method. The CSCs with a reduced Goldschmidt tolerance factor owing to the presence of Cs and MA ions exhibit exceptional properties, including a bandgap of 1.447 eV, low dark current, and self-powered response to X-ray irradiation. The X-ray absorption rate of 36 keV exceeded 99% with a CSC thickness of 2 mm, demonstrating its strong stopping power. Moreover, the CSC detectors exhibit precise linear responses to varying X-ray doses and dose rates with R2 values close to 1 and relative standard deviation (RSD) values below 3% under all the tested conditions. In addition, the detector effectively detected high-energy X-rays of up to 15 MV with minimal variations in the RSD values. These findings highlight the potential of CSC as promising materials for high-performance X-ray detectors.
科研通智能强力驱动
Strongly Powered by AbleSci AI