All inorganic CsPbX_(3)(X=Cl,Br,and I)perovskite nanocrystals have made unprecedented radical progresses for opto-electronic applications,but their instability and toxicity of lead impede their wide applications.Herei...All inorganic CsPbX_(3)(X=Cl,Br,and I)perovskite nanocrystals have made unprecedented radical progresses for opto-electronic applications,but their instability and toxicity of lead impede their wide applications.Herein,we report the first precipitation of leadfree Mn:Cs_(2)ZnX_(4) nanocrystals in glasses.Efficient green and red photoluminescence are realized from these Mn:Cs_(2)ZnX_(4 )nanocrystals in glasses.By adjusting the size and halide component in these nanocrystals,coordination environment of Mn^(2+)ions can be tuned,leading to tunable photoluminescence with improved quantum efficiency.It is illustrated that in-situ precipitation of these Mn:Cs_(2)ZnX_(4) nanocrystals in glasses significantly improves their thermal-,chemical-,and photo-stabilities,making them promising for light-emitting diodes with stable chromaticity coordinates.展开更多
基金supported by the Key Research and Development Program of Hubei Province,China(No.2021BAA206).
文摘All inorganic CsPbX_(3)(X=Cl,Br,and I)perovskite nanocrystals have made unprecedented radical progresses for opto-electronic applications,but their instability and toxicity of lead impede their wide applications.Herein,we report the first precipitation of leadfree Mn:Cs_(2)ZnX_(4) nanocrystals in glasses.Efficient green and red photoluminescence are realized from these Mn:Cs_(2)ZnX_(4 )nanocrystals in glasses.By adjusting the size and halide component in these nanocrystals,coordination environment of Mn^(2+)ions can be tuned,leading to tunable photoluminescence with improved quantum efficiency.It is illustrated that in-situ precipitation of these Mn:Cs_(2)ZnX_(4) nanocrystals in glasses significantly improves their thermal-,chemical-,and photo-stabilities,making them promising for light-emitting diodes with stable chromaticity coordinates.
