Advancements in Metal Halide Perovskites and their Derivatives for Direct‐Type X‐Ray Detectors

), and metal-free perovskites. The performance-limiting mechanism and corresponding defect-mediated optimization are further analyzed, establishing a material design framework for developing highly sensitive metal halide perovskite-based detectors. The last part envisions strategic domains spanning charge transport engineering, biocompatibility and eco-friendliness considerations, flexible and self-powered perovskite system design, high-quality and efficient preparation methods, and high operational stability enhancements, constructing a comprehensive framework for advancing perovskite-based detection technologies. This review provides insightful inspiration for the development of novel X-ray detectors.