基于溶液法制备卤化铅钙钛矿的直接型辐射探测器研究进展

Research Progress for Lead Halide Perovskite Direct Radiation Detector Based on the Solution Method

X射线和γ射线探测在医学成像、安防检查、国土安全、无损检测等各个领域得到广泛应用,钙钛矿材料具有高辐射吸收系数、高载流子迁移率-寿命乘积、特殊的缺陷容忍特性而成为辐射探测器件优异的候选材料。溶液法在制备钙钛矿材料方面具有显著的优势,溶液法的成本较低,能在低温或环境条件下制备,更易推行工业化生产,是未来优化材料体系,制备高质量、大尺寸晶体材料的关键技术。本文从溶液法制备卤化铅钙钛矿材料的角度出发,分析晶体生长及材料组成对辐射探测性能的影响,重点介绍从优化晶体生长质量和器件结构设计等方面提升辐射探测性能,最后总结钙钛矿材料在辐射探测领域面临的挑战,并展望了未来研究的发展方向,期望为钙钛矿材料在辐射探测领域走向工业化提供参考。

X-ray and γ-ray detection have been extensively studied and applied in medical imaging,security inspection,homeland security,non-destructive testing and other various fields.Perovskite materials have become excellent candidats for radiation detector devices due to their high radiation absorption coefficient,high carrier mobility-lifetime product and defect tolerance.The solution method offers significant advantages in the preparation of perovskite materials.It is a cost-effective approach that can be carried out at low temperatures or under ambient conditions.Additionally,it is also easier to implement for industrial production.This method plays a crucial role in optimizing the material system and achieving the preparation of high quality and large area crystal materials in the future.This paper analyzes the effects of crystal growth and material composition on radiation detection performance,focusing on the solution preparation of perovskite materials.The study aims to improve radiation detection performance by optimizing crystal growth quality and device structure design.Additionally,it also summarises the challenges faced by perovskite materials in the field of radiation detection and suggests future research directions.The results of this study are expected to serve as a reference for the industrialization of perovskite materials in the field of radiation detection.