@article{Shi2023, 
author = {Tongyu Shi and Wenjun Liu and Jiongtao Zhu and Xiongsheng Fan and Zhengyu Zhang and Xingchen He and Rui He and Jiahong Wang and Kezhen Chen and Yongshuai Ge and Xiangming Sun and Yanliang Liu and Paul K. Chu and Xue-Feng Yu},
title = {CsPbBr3-DMSO merged perovskite micro-bricks for efficient X-ray detection},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {7},
pages = {9983-9989},
keywords = {CsPbBr3-DMSO, inorganic perovskites wafer, grain growth, crystal defect, X-ray detector},
url = {https://www.sciopen.com/article/10.1007/s12274-023-5487-3},
doi = {10.1007/s12274-023-5487-3},
abstract = {Inorganic perovskite wafers with good stability and adjustable sizes are promising in X-ray detection but the high synthetic temperature is a hindrance. Herein, dimethyl sulfoxide (DMSO) is used to prepare the CsPbBr3 micro-bricks powder at room temperature. The CsPbBr3 powder has a cubic shape with few crystal defects, small charge trap density, and high crystallinity. A trace amount of DMSO attaches to the surface of the CsPbBr3 micro-bricks via Pb–O bonding, forming the CsPbBr3-DMSO adduct. During hot isostatic processing, the released DMSO vapor merges the CsPbBr3 micro-bricks, producing a compact and dense CsPbBr3 wafer with minimized grain boundaries and excellent charge transport properties. The CsPbBr3 wafer shows a large mobility-lifetime (μτ) product of 5.16 × 10-4 cm2·V−1, high sensitivity of 14,430 µC·Gyair−1·cm−2, low detection limit of 564 nGyair·s−1, as well as robust stability in X-ray detection. The results reveal a novel strategy with immense practical potential pertaining to high-contrast X-ray detection.}
}