Orange-red emitting Eu2+-activated(Sr0.883Ba0.1Lu0.0.17)3(Si0.95Al0.05)O5 phosphor: structure, photoluminescence, and application in white LEDs
来源期刊：JOURNAL OF RARE EARTHS2015年第5期
论文作者：赵凤阳 吕雁鹏 周广洲 朴贤卿 孙卓
文章页码：469 - 474
摘 要：Orange-red emitting（Sr0.883–xBa0.1Lu0.0.17Eux）3（Si0.95Al0.05）O5 phosphors were synthesized by conventional solid-state reaction. The effect of NH4 F flux on structural and luminescent properties of phosphors was investigated. Results suggested that the optimal content of NH4 F flux was 3 wt.% and the optimal doping concentration of Eu2+ was x=0.023 mol. The phosphors showed intense absorption in near-ultraviolet to blue region and exhibited orange-red emissions. The thermal stability of synthesized（Sr0.86Ba0.1Lu0.017Eu0.023）3（Si0.95Al0.05）O5 phosphor were examined and compared with commercial YAG:Ce3+ yellow phosphors. Combining an In Ga N blue 460 nm chip and a white-emitting（Sr0.86Ba0.1Lu0.017Eu0.023）3（Si0.95Al0.05）O5 phosphor produced a whitelight LED, demonstrating CIE chromaticity coordinates of（0.314, 0.329） and a color temperature of 5595 K. All results showed that this phosphor is a promising candidate as orange-red emitting phosphor for white light emitting diode（w-LED） application.
赵凤阳，吕雁鹏，周广洲，朴贤卿，孙卓
Engineering Research Center for Nanophotonics & Advanced Instrument Ministry of Education Department of Physics East China Normal University
摘 要：Orange-red emitting（Sr0.883–xBa0.1Lu0.0.17Eux）3（Si0.95Al0.05）O5 phosphors were synthesized by conventional solid-state reaction. The effect of NH4 F flux on structural and luminescent properties of phosphors was investigated. Results suggested that the optimal content of NH4 F flux was 3 wt.% and the optimal doping concentration of Eu2+ was x=0.023 mol. The phosphors showed intense absorption in near-ultraviolet to blue region and exhibited orange-red emissions. The thermal stability of synthesized（Sr0.86Ba0.1Lu0.017Eu0.023）3（Si0.95Al0.05）O5 phosphor were examined and compared with commercial YAG:Ce3+ yellow phosphors. Combining an In Ga N blue 460 nm chip and a white-emitting（Sr0.86Ba0.1Lu0.017Eu0.023）3（Si0.95Al0.05）O5 phosphor produced a whitelight LED, demonstrating CIE chromaticity coordinates of（0.314, 0.329） and a color temperature of 5595 K. All results showed that this phosphor is a promising candidate as orange-red emitting phosphor for white light emitting diode（w-LED） application.
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