关键词:
phosphor-glass composites
narrow-band emission
luminescence materials
laser phosphor display
摘要:
Laser phosphor display(LPD)technology has attained considerable attention due to its high brightness,wide-gamut,and non-speckle ***,it is challenging to develop laser-resistant bulk luminescent materials with narrow-band emissions for LPD ***,we present a general strategy to fabricate stable phosphor-glass composites(PGCs)containing commercial red-emitting K_(2)SiF_(6):Mn^(4+)(KSF:Mn^(4+))and green-emitting β-SiAlON:Eu^(2+)with high internal quantum efficiencies of 94.6%and 87.8%.Thereupon,“phosphor wheels”of the two PGCs achieve high luminous flux and efficiency for KSF:Mn-PGC(684 lm,21 lm W^(−1) mm^(−1))andβ-SiAlON:Eu-PGC(4770 lm,172 lm W^(−1) mm^(−1)),respectively,by mitigating thermal ***,we integrate these two PGCs into a patterned phosphor wheel,which covers 125%of the Rec.709 standard,far exceeding that of the present YAG:Ce-based laser light sources(103%).Our work paves the way for adapting commercial phosphors in bulk PGC materials to improve their stability and further promote LPD development and new types of display applications.