Wu Ya, Feng Jiangshan, Yang Zhou, Liu Yucheng, Liu Shengzhong Frank
College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, 710065, China.
Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China.
Adv Sci (Weinh). 2022 Dec 1;10(1):e2205536. doi: 10.1002/advs.202205536.
In the past decade, metal halide perovskite (HP) has become a superstar semiconductor material due to its great application potential in the photovoltaic and photoelectric fields. In fact, HP initially attracted worldwide attention because of its excellent photovoltaic efficiency. However, HP and its derivatives also show great promise in X-ray detection due to their strong X-ray absorption, high bulk resistivity, suitable optical bandgap, and compatibility with integrated circuits. In this review, the basic working principles and modes of both the direct-type and the indirect-type X-ray detectors are first summarized before discussing the applicability of HP for these two types of detection based on the pros and cons of different perovskites. Furthermore, the authors expand their view to different preparation methods developed for HP including single crystals and polycrystalline materials. Upon systematically analyzing their potential for X-ray detection and photoelectronic characteristics on the basis of different structures and dimensions (0D, 2D, and 3D), recent progress of HPs (mainly polycrystalline) applied to flexible X-ray detection are reviewed, and their practicability and feasibility are discussed. Finally, by reviewing the current research on HP-based X-ray detection, the challenges in this field are identified, and the main directions and prospects of future research are suggested.
在过去十年中，金属卤化物钙钛矿（HP）因其在光伏和光电领域的巨大应用潜力而成为一种超级半导体材料。事实上，HP最初因其优异的光伏效率而引起全球关注。然而，HP及其衍生物由于其强烈的X射线吸收、高体电阻率、合适的光学带隙以及与集成电路的兼容性，在X射线检测中也显示出巨大的潜力。在这篇综述中，首先总结了直接型和间接型X射线探测器的基本工作原理和模式，然后基于不同钙钛矿的优缺点讨论了HP在这两种检测类型中的适用性。此外，作者还将视野扩展到为HP开发的不同制备方法，包括单晶和多晶材料。在基于不同结构和维度（0D、2D和3D）系统分析它们的X射线检测潜力和光电子特性后，综述了应用于柔性X射线检测的HP（主要是多晶）的最新进展，并讨论了它们的实用性和可行性。最后，通过回顾当前基于HP的X射线检测研究，确定了该领域的挑战，并提出了未来研究的主要方向和前景。
