Organic-inorganic hybrid perovskite materials have attracted increasing attention in recent years for ionizing radiation detection due to their large cross-section for high energy X-ray or gamma ray, defect-tolerance, large mobility lifetime product, tunable bandgap and facile preparation of single crystals. However, the thickness of solution processed perovskite polycrystalline films are normally limited, and single crystals are fragile and hard to be utilized as a device. In this article, we successfully realized the preparation of the perovskite crystal/polymer composites, through a novel process involving mechanically grinding and sieving. X-ray detectors were fabricated based on the relatively thick composite films via solution process. The device performance under the irradiation of X-rays were also investigated, in terms of stability, dark current, noise and temporal response. Our devices exhibited remarkable performance metrics, which proved that the perovskite composite films can be used to fabricate highly efficient and low-cost X-ray detectors.

近年来，有机-无机杂化钙钛矿材料因其用于高能X射线或γ射线的大横截面，耐缺陷性，大迁移寿命产品，可调节带隙以及单分子膜的简便制备而在电离辐射检测领域引起了越来越多的关注。晶体。然而，溶液加工的钙钛矿多晶膜的厚度通常受到限制，并且单晶易碎并且难以用作装置。在本文中，我们通过涉及机械研磨和筛分的新方法成功实现了钙钛矿晶体/聚合物复合材料的制备。X射线探测器是基于相对较厚的复合膜通过解决过程。还从稳定性，暗电流，噪声和时间响应方面研究了在X射线照射下的器件性能。我们的设备表现出非凡的性能指标，证明钙钛矿复合膜可用于制造高效且低成本的X射线探测器。