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- W2899455569 abstract "Abstract Li2SrSiO4:Eu2+ yellow phosphors were synthesized by Polymerized Complex Method using TEOS and their thermal stability was investigated. The synthesized phosphors exhibited a broad yellow emission band around 560 nm. The optimum H2/N2 reduction temperature and Eu concentration are 900 °C and 0.5% respectively, which show the highest PL intensity and 6 times higher than samples synthesized by conventional solid-state reaction at the same condition. In order to investigate the thermal stability, PL properties in temperature range from 16.4 K to 583 K were examined. The PL intensity remains 80% above at high temperature (438 K) compared with room temperature. Activation energy and internal quantum efficiency of samples are estimated to be 0.43 eV and 62% respectively. Emission processes in Li2SrSiO4:Eu2+ phosphor were discussed with configuration coordinate model. The results reveal that Li2SrSiO4:Eu2+ yellow phosphors shows excellent thermal stability and have feasibility in replacement of YAG:Ce3+ yellow phosphors in white LEDs application." @default.
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- W2899455569 date "2019-03-01" @default.
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- W2899455569 title "Luminescence properties of Li2SrSiO4:Eu2+ silicate yellow phosphors with high thermal stability for high-power efficiency white LED application" @default.
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- W2899455569 doi "https://doi.org/10.1016/j.jlumin.2018.10.113" @default.
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