文章信息/Info

Title:

Metal Halide Perovskites for X-ray Detection and Imaging

文章編號:

1674-3962(2023)03-0215-13

作者:

吳蓉; 劉方澤; 鮑雨春; 李紅博

（北京理工大學材料學院，北京 100081）

Author(s):

WU Rong;  LIU Fangze;  BAO Yuchun;  LI Hongbo

(School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China)

關鍵詞:

X射線; 探測器; 金屬鹵化鈣鈦礦; 輻射; 成像; 靈敏度

Keywords:

X-ray;  detectors;  metal halide perovskites;  radiation;  imaging;  sensitivity

分類號:

TL816+.1

DOI:

10.7502/j.issn.1674-3962.202201014

文獻標志碼:

A

摘要:

X射線探測技術廣泛應用于醫療診斷、安檢和質量檢測等無損探測領域。金屬鹵化鈣鈦礦因具備易于制備、低缺陷密度、高電阻率和高載流子遷移率-壽命乘積等性質而成為理想的X射線吸收材料。首先從X射線與半導體吸收材料相互作用的物理機制、探測器結構和評價指標出發，分析了金屬鹵化鈣鈦礦作為X射線探測吸收材料的優勢，進一步介紹了面向X射線探測的金屬鹵化鈣鈦礦的合成方法�？偨Y了近年來基于金屬鹵化鈣鈦礦的X射線探測的重要研究進展，并圍繞如何提升靈敏度和檢測限開展了系統的討論。同時，還介紹了X射線探測器與讀出電路的集成方式和近年來X射線成像的研究進展。最后，展望了基于金屬鹵化鈣鈦礦的X射線探測與成像未來發展面臨的挑戰和方向。

Abstract:

X-ray detection technology is a widely used technology in non-destructive inspections, including medical diagnosis, safety inspection and quality inspection. Metal halide perovskites are ideal X-ray absorption materials because of their easy preparation, low defect density, high resistivity and high carrier mobility-lifetime product. Starting from the fundamental interactions between X-ray and absorption material, detector structure and evaluation metrics, this review analyses the advantages of metal halide perovskites as X-ray absorption material and further introduces the synthesis methods of metal halide perovskites. Next, this review summarizes the recent progress of X-ray detectors based on metal halide perovskites in recent years, and systematically discusses how to improve the sensitivity and detection limit. The integration methods of X-ray detector and read out circuit, and the research progress of X-ray imaging detectors in recent years are also overviewed. Finally, the challenges and outlooks of X-ray detection and imaging based on metal halide perovskites are proposed.