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- W4281699891 abstract "With its unique 6s2 outermost electronic structure, Bi3+ can emit blue, green and even red light, and Bi3+-activated luminescent materials for lighting are emerging. In this work, new blue-emitting Ba2(Y1-x, Lux)5B5O17: y at.% Bi (BYLBO: y at.% Bi) phosphors were synthesized by high temperature solid state method. By introducing Lu into the host lattice to substitute Y, the structural rigidity of the host crystal can be greatly strengthened and the phonon energy can be reduced. At the excitation of 370 nm, high efficiency and thermal stability blue light emission was achieved from Ba2Lu5B5O17: 1 at.% Bi (BYBO: 1 at.% Bi) phosphors. And it has a photoluminescence quantum yield (PLQY) of 78% and thermal quenching TQ150°C = 70%. Further, a bright wLED was fabricated by coating BLBO: 1 at.% Bi, commercial green and red phosphors on 370 nm n-UV chip, which chromaticity coordinate is (0.389, 0.378), correlated colour temperature (CCT) = 3395 K and the correlated color rendering index (CRI) = 91. These results not only provide a potential n-UV excited blue phosphor, but also shed a little light on how to design phosphors with strong thermal stability and high quantum efficiency." @default.
- W4281699891 created "2022-06-13" @default.
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- W4281699891 date "2022-07-01" @default.
- W4281699891 modified "2023-09-23" @default.
- W4281699891 title "Investigation on Ba2(Y1-x, Lux)5B5O17: y at.% Bi as a new type of N-UV excited high efficient blue phosphor for wLED" @default.
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- W4281699891 doi "https://doi.org/10.1016/j.optmat.2022.112542" @default.
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