Lead halide perovskite materials exhibit excellent scintillation performance,which,however,suffer from serious stability and toxicity problems.In contrast,the heavy metal-free anti-perovskite materials[MX_(4)]XA_(3)(A...Lead halide perovskite materials exhibit excellent scintillation performance,which,however,suffer from serious stability and toxicity problems.In contrast,the heavy metal-free anti-perovskite materials[MX_(4)]XA_(3)(A=alkali metal;M=transition metal;X=Cl,Br,I),a class of electron-inverted perovskite derivatives,exhibit robust structural and photophysical stability.Here,we design and prepare a lead-free[MnBr_(4)]BrCs_(3) anti-perovskite nanocrystal(NC)-embedded glass for efficient X-ray-excited luminescence with high-resolution X-ray imaging with a spatial resolution of 19.1 Ip mm^(-1).Due to the unique crystal structure and the protection of the glass matrix,the Cs_(3)MnBr_(5) NC-embedded glass exhibits excellent X-ray irradiation stability,thermal stability,and water resistance.These merits enable the demonstration of real-time and durable X-ray radiography based on the developed glassy composite.This work could stimulate the research and development of novel metal halide anti-perovskite materials and open a new path for future development in the field of high-resolution and ultrastable X-ray imaging.展开更多
基金financially supported by the National Natural Science Foundation of China (62122027, 52002128, 62075063, 62205109, 12204179, 52202004)Key R&D Program of Guangzhou (202007020003)+6 种基金fellowship of the China Postdoctoral Science Foundation (2022M711185, 2021M691054)National Postdoctoral Program for Innovative Talents of China (BX20220113)Guangdong Basic and Applied Basic Research Foundation (2021A1515110911, 2021A1515110475, 2022A1515011289, 2023A1515012666)Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program (2017BT01X137)Fundamental Research Funds for the Central Universities (2022ZYGXZR030)Guangzhou Basic and Applied Basic Research Foundation (202201010428)State Key Laboratory of Luminescent Materials and Devices, South China University of Technology
文摘Lead halide perovskite materials exhibit excellent scintillation performance,which,however,suffer from serious stability and toxicity problems.In contrast,the heavy metal-free anti-perovskite materials[MX_(4)]XA_(3)(A=alkali metal;M=transition metal;X=Cl,Br,I),a class of electron-inverted perovskite derivatives,exhibit robust structural and photophysical stability.Here,we design and prepare a lead-free[MnBr_(4)]BrCs_(3) anti-perovskite nanocrystal(NC)-embedded glass for efficient X-ray-excited luminescence with high-resolution X-ray imaging with a spatial resolution of 19.1 Ip mm^(-1).Due to the unique crystal structure and the protection of the glass matrix,the Cs_(3)MnBr_(5) NC-embedded glass exhibits excellent X-ray irradiation stability,thermal stability,and water resistance.These merits enable the demonstration of real-time and durable X-ray radiography based on the developed glassy composite.This work could stimulate the research and development of novel metal halide anti-perovskite materials and open a new path for future development in the field of high-resolution and ultrastable X-ray imaging.
基金financially supported by the Key R&D Program of Guangzhou (202007020003)the National Natural Science Foundation of China (62075063, 51772101 and 51872095)+2 种基金the Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program (2017BT01X137)the Natural Science Foundation of Guangdong Province (2019B030301003)the State Key Lab of Luminescent Materials and Devices,South China University of Technology
