ABSTRACT 0D manganese‐based X‐ray scintillators have garnered significant attention due to their unique ion‐centered luminescence and high photoluminescence quantum yields (PLQYs). However, achieving a synergistic optimization among light yield, detection limit, spatial resolution, and non‐planar imaging capability remains a challenge. In this study, single crystals of (C 25 H 22 P) 2 MnBr 4 are synthesized via a solvent evaporation method. Owing to the tetrahedral coordination geometry of the MnBr 4 2− polyhedron and the characteristics of the d‐d electron transition of Mn 2+ , the as‐prepared materials exhibit a strong green emission at 512 nm with a high PLQY of 91.27%. Furthermore, flexible (C 25 H 22 P) 2 MnBr 4 @PDMS scintillators are fabricated via a template assembly method. Benefiting from high optical transparency and excellent luminescent properties, the scintillators demonstrate outstanding radiative performance, achieving a maximum light yield of up to 48750 ph/MeV, a low detection limit of 45.8 nGy air /s, and a high spatial resolution of 17.64 lp/mm. Notably, the flexible scintillators are capable of realizing both planar and non‐planar X‐ray imaging with high quality, thereby offering a versatile and effective platform for high‐performance X‐ray visualization.
Mo et al. (2026) studied this question.