Multifunctional 0D Manganese‐Based Organic–Inorganic Hybrid Halide for Ultraviolets and X‐Ray Detection

Multifunctional photodetectors have driven the development of traditional optical communication technologies and emerging artificial intelligence fields. While three-dimensional (3D) organic lead trihalides have recently demonstrated potential as versatile photodetectors, the device performance is constrained by ion mobility limitations. In contrast, low-dimensional metal halide perovskites (MHPVKs) exhibit enhanced intrinsic stability, suppressed ion migration, and exceptional photoelectric properties. Inspired by these advantages, a zero-dimensional (0D) manganese (Mn)-based organic-inorganic hybrid halide (MA₂MnBr₄) and fabricated high-quality films at room temperature via a facile melt-growth method is presented. Subsequently, Ultraviolet (UV) and X-ray detectors based on MA₂MnBr₄ films are fabricated, and their device performance is systematically characterized. The UV photodetector based on an MA₂MnBr₄ film showed a response rate of 11 mA W^-1 and a detection rate of 1.4 × 10¹² Jones. Meanwhile, the MA₂MnBr₄-based X-ray detector has a high sensitivity of 1959.9 µC Gy_air ^-1 cm^-2 and an exceptionally low detection dose rate of 73.1 nGy_air s^-1, both of which are required for medical diagnosis. This study not only advances the understanding of Mn-based material but also highlights their promise for high-performance UV and X-ray detection.