Halide Perovskite Radiation Detectors: Conventional Imaging Applications and New Opportunities

초록

Organic-inorganic hybrid halide perovskites (OIHPs) semiconductors with outstanding optoelectronic properties have attracted significant attention as next-generation integrated radiation detectors for medical radiodiagnosis and healthcare monitoring, e.g., flat-panel X-ray imagers (FPXIs). A deep understanding of the "structure-property" relationship is critical for advancing high-performance imager sensors and unlocking new application scenarios. This review summarizes recent progress in halide perovskite X/gamma-ray detectors, focusing on advances in material synthesis, preparation methods, imager integration, and practical applications. The fundamental principles of ionizing X/gamma-ray detection are first presented, and the criteria for FPXIs application-specific detectors are outlined. Then, the status of perovskite X/gamma-ray detectors is reviewed according to "structure-property" relationships, emphasizing how composition and crystallinity influence the detection performances of OIHPs detectors. The fabrication and characterization of the perovskite-based FPXIs, as one of the most important potential applications, are subsequently discussed in detail. Finally, the frontier applications driven by the unique property of perovskites, e.g., flexible X-ray imagers and wearable dosimeters, are also concluded.

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