Mn(2+) Doping in Organic Zn(II)-Based Halides toward Significantly Enhanced Optical Characteristics and Stabilities #MMPMID41319334
Zan HZ; Yu F; Guo JH; Zhang YC; Kuang ZM; Wang H; Lv YQ; Zhang GN; Lei XW; Kong XW
Inorg Chem 2025[Nov]; ? (?): ? PMID41319334show ga
Hybrid metal halide perovskites have emerged as outstanding new scintillators due to their entire spectrum range coverage, high photoluminescence quantum yield (PLQY), low self-absorption, and large Stokes shift. However, Zn(II)-based halides exhibiting excellent scintillator properties remain relatively scarce. Herein, we employed a Mn(2+)-doping strategy to optimize zero-dimensional (0D) Zn(II)-based halides and realized highly efficient luminescence and scintillation performance. Compared with the weak bluish emission (439 nm, PLQY approximately 1%) of (BACQ)(2)ZnCl(4), the Mn(2+)-doping strategy results in a green emission at 533 nm with a significantly enhanced PLQY of 38%. This green emission originates from the d-d transition of the Mn(2+) ions. Furthermore, (BACQ)(2)ZnCl(4).4.7%Mn(2+) demonstrates more excellent structural and optical stability in an aqueous environment than pristine (BACQ)(2)MnCl(4). As a scintillator, (BACQ)(2)ZnCl(4).4.7%Mn(2+) displays excellent scintillation properties with a light yield of 17541 photons MeV(-1), a detection limit of 122.5 nGyair s(-1), a short afterglow of 1.45 ms, and robust radiation stability. These properties enable high-resolution X-ray imaging with a spatial resolution of 11.3 lp/mm. The superior scintillation performances present the feasibility of the metal doping strategy and promote the development of stable Zn(II)-based halides.
Inorg+Chem 2025 ; ? (?): ?
