Williams Richard T, Wolszczak Weronika W, Yan Xiaoheng, Carroll David L
Department of Physics, Center for Nanotechnology and Molecular Materials, and Center for Functional Materials, Wake Forest University, Winston-Salem, North Carolina 27109, United States.
Delft University of Technology, 2628 Delft, Netherlands.
ACS Nano. 2020 May 26;14(5):5161-5169. doi: 10.1021/acsnano.0c02529. Epub 2020 May 13.
The concept of quantum-dot-in-perovskite solids pioneered by Ning and co-workers introduces a useful class of solution-processed type I heterostructures for optoelectronics applications. Concurrent searches for solution-processable detectors of ionizing radiation have focused on lead-halide perovskites. As described in this issue of , Cao . examined CsPbBr nanocrystals imbedded in CsPbBr as a wider gap host and determined its performance and possibilities as a scintillator for X-ray imaging. In this Perspective, we describe issues and research opportunities on ionizing radiation imaging and spectroscopy based on the CsPbBr@CsPbBr composite and other perovskite-dot-in-host combinations in which the dot may be of lower dimensionality than 3, and we explore ionizing radiation detectors using halide perovskites.
由宁及其同事率先提出的钙钛矿固体中量子点的概念，为光电子应用引入了一类有用的溶液处理型I异质结构。同时，对可溶液处理的电离辐射探测器的研究集中在卤化铅钙钛矿上。正如本期曹等人所描述的那样，研究了嵌入CsPbBr作为更宽带隙主体的CsPbBr纳米晶体，并确定了其作为X射线成像闪烁体的性能和可能性。在这篇展望中，我们描述了基于CsPbBr@CsPbBr复合材料以及其他主体中钙钛矿量子点组合（其中量子点的维度可能低于三维）的电离辐射成像和光谱学的问题及研究机会，并探讨了使用卤化钙钛矿的电离辐射探测器。
