Highly Transparent Lead Halides Bmpip ₂ PbBr ₄ Single Crystals for X‐Ray Imaging and Versatile Ionizing Radiation Detection

Metal halides have emerged as promising candidates for high-performance optoelectronic devices and radiation detectors. However, developing a single scintillator material sensitive to multiple types of ionizing radiation, such as X-rays, γ-rays and neutrons, remains challenging due to their vastly different absorption cross-sections. In this work, we report a 0D organic metal halide hybrid single crystal, Bmpip₂PbBr₄, which incorporates light organic cations and heavy inorganic frameworks at the molecular scale to enable multifarious ionizing radiation detection. This novel single crystal demonstrates remarkable optical transparency (98.90%) and outstanding luminescent performance (PLQY = 48.14, life time = 63.50). Under exposure to X-ray radiation and γ-rays from ²²Na, the light yields reach 21,000± 800 (X-ray) and 16000 photons MeV^-1 (²²Na γ-ray), respectively. Moreover, the material demonstrates effective detection capabilities for α-particles, β-particles, γ-rays and neutrons. These results highlight the potential of Bmpip₂PbBr₄ single crystals as a versatile scintillator for detecting X-ray imaging and ionizing radiation detection.