Zero-dimensional(0D)hybrid manganese halides have gained wide attention for the various crystal structures,excellent optical performance and scintillation properties compared with 3D lead halide perovskite nanocrystal...Zero-dimensional(0D)hybrid manganese halides have gained wide attention for the various crystal structures,excellent optical performance and scintillation properties compared with 3D lead halide perovskite nanocrystals.In this work,a new family of 0D hybrid manganese halides of A_(2)MnBr_(4)(A=BzTPP,Br-BzTPP,and F-BzTPP)based on discrete[MnBr_(4)]^(2-) tetrahedral units is reported as highly efficient lead-free scintillators.Excited by UV or blue light,these hybrids emit bright green light originating from the d–d transition of Mn^(2+) with near-unity PLQY(99.5%).Signif-icantly,high PLQY and low self-absorption render extraordinary radioluminescence properties with the highest light yield of 80,100 photons MeV-1,which reached the climax of present hybrid manganese halides and surpassed most commercial scin-tillators.The radioluminescence intensity features a linear response to X-ray doses with a detection limit of 30 nGyair s^(-1),far lower than the requirement of medical diagnostic(5.5µGyair s^(-1)).X-ray imaging demonstrates ultrahigh spatial resolution of 14.06 lp mm^(-1) and short afterglow of 0.3 ms showcasing promising application prospects in radiography.Overall,we demonstrated new hybrid manganese halides as promising scintillators for advanced applications in X-ray imaging with multi-ple superiorities of nontoxicity,facile-assembly process,high irradiation light yield,excellent resolution,and stability.展开更多
基金National Nature Science Foundation of China,Grant/Award Numbers:22171105,12004384Shandong Provincial Natural Science Foundation,Grant/Award Numbers:ZR2020KB012,ZR2022YQ14+1 种基金State Key Laboratory of Structural Chemistry,Grant/Award Number:20210015Special Foundation of Taishan Scholar Project。
文摘Zero-dimensional(0D)hybrid manganese halides have gained wide attention for the various crystal structures,excellent optical performance and scintillation properties compared with 3D lead halide perovskite nanocrystals.In this work,a new family of 0D hybrid manganese halides of A_(2)MnBr_(4)(A=BzTPP,Br-BzTPP,and F-BzTPP)based on discrete[MnBr_(4)]^(2-) tetrahedral units is reported as highly efficient lead-free scintillators.Excited by UV or blue light,these hybrids emit bright green light originating from the d–d transition of Mn^(2+) with near-unity PLQY(99.5%).Signif-icantly,high PLQY and low self-absorption render extraordinary radioluminescence properties with the highest light yield of 80,100 photons MeV-1,which reached the climax of present hybrid manganese halides and surpassed most commercial scin-tillators.The radioluminescence intensity features a linear response to X-ray doses with a detection limit of 30 nGyair s^(-1),far lower than the requirement of medical diagnostic(5.5µGyair s^(-1)).X-ray imaging demonstrates ultrahigh spatial resolution of 14.06 lp mm^(-1) and short afterglow of 0.3 ms showcasing promising application prospects in radiography.Overall,we demonstrated new hybrid manganese halides as promising scintillators for advanced applications in X-ray imaging with multi-ple superiorities of nontoxicity,facile-assembly process,high irradiation light yield,excellent resolution,and stability.
基金supported by the National Natural Science Foundation of China(22171105 and 12004384)Shandong Provincial Natural Science Foundation(ZR2020KB012,ZR2021MB001,and ZR2022YQ14)+1 种基金the Fund of State Key Laboratory of Structural Chemistry(20210015)the Special Foundation of Taishan Scholar Project.
