Halide Perovskite: A Promising Candidate for Next‐Generation X‐Ray Detectors
Abstract
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.
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