In the current situation of energy shortages,saving energy and reducing consumption are undoubtedly valid methods to relieve the pressure on resources.CsPbX_(3)(X=Cl,Br,and I)perovskites as star inorganic materials ha...In the current situation of energy shortages,saving energy and reducing consumption are undoubtedly valid methods to relieve the pressure on resources.CsPbX_(3)(X=Cl,Br,and I)perovskites as star inorganic materials have drawn growing attention owing to their unique properties,making them suitable for applications such as light-emitting diodes(LEDs),solar cells,photodetectors,or lasers.This work presents zinc oxide(ZnO)induced self-crystallized CsPb(Br/I)_(3) perovskite with a 26%photoluminescence quantum yield(PLQY)prepared by the traditional melt-quenching method.Furthermore,the full width at half maximum(FWHM)(34–44 nm)can be regulated by the ZnO content.In addition,as a downconverter,CsPb(Br/I)_(3) perovskite nanocrystals(NCs)realize a bright red backlight that covers≈94%Rec.2020 standards in the CIE 1931 color space and 126%of National Television System Committee(NTSC).This finding undoubtedly confirms an effective path for fabricating perovskite materials in a green,low-cost,and time-saving way,enriching the knowledge of glass crystallization mechanisms and promoting their applications in wide color gamut backlights.展开更多
基金the National Natural Science Foundation of China(Nos.51872207 and 52072271)。
文摘In the current situation of energy shortages,saving energy and reducing consumption are undoubtedly valid methods to relieve the pressure on resources.CsPbX_(3)(X=Cl,Br,and I)perovskites as star inorganic materials have drawn growing attention owing to their unique properties,making them suitable for applications such as light-emitting diodes(LEDs),solar cells,photodetectors,or lasers.This work presents zinc oxide(ZnO)induced self-crystallized CsPb(Br/I)_(3) perovskite with a 26%photoluminescence quantum yield(PLQY)prepared by the traditional melt-quenching method.Furthermore,the full width at half maximum(FWHM)(34–44 nm)can be regulated by the ZnO content.In addition,as a downconverter,CsPb(Br/I)_(3) perovskite nanocrystals(NCs)realize a bright red backlight that covers≈94%Rec.2020 standards in the CIE 1931 color space and 126%of National Television System Committee(NTSC).This finding undoubtedly confirms an effective path for fabricating perovskite materials in a green,low-cost,and time-saving way,enriching the knowledge of glass crystallization mechanisms and promoting their applications in wide color gamut backlights.
