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- W3135722889 abstract "Abstract Rapid development of solid-state lighting technology requires new materials with highly efficient and stable luminescence, and especially relies on blue light pumped red phosphors for improved light quality. Herein, we discovered an unprecedented red-emitting Mg 2 Al 4 Si 5 O 18 :Eu 2+ composite phosphor ( λ ex = 450 nm, λ em = 620 nm) via the crystallization of MgO–Al 2 O 3 –SiO 2 aluminosilicate glass. Combined experimental measurement and first-principles calculations verify that Eu 2+ dopants insert at the vacant channel of Mg 2 Al 4 Si 5 O 18 crystal with six-fold coordination responsible for the peculiar red emission. Importantly, the resulting phosphor exhibits high internal/external quantum efficiency of 94.5/70.6%, and stable emission against thermal quenching, which reaches industry production. The maximum luminous flux and luminous efficiency of the constructed laser driven red emitting device reaches as high as 274 lm and 54 lm W −1 , respectively. The combinations of extraordinary optical properties coupled with economically favorable and innovative preparation method indicate, that the Mg 2 Al 4 Si 5 O 18 :Eu 2+ composite phosphor will provide a significant step towards the development of high-power solid-state lighting." @default.
- W3135722889 created "2021-03-15" @default.
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- W3135722889 date "2021-03-12" @default.
- W3135722889 modified "2023-10-17" @default.
- W3135722889 title "Glass crystallization making red phosphor for high-power warm white lighting" @default.
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- W3135722889 doi "https://doi.org/10.1038/s41377-021-00498-6" @default.
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