Eu2+-doped Sr5（PO4）3Br blue-emitting phosphor with high color purity for near-UV-pumped white light-emitting diodes
来源期刊：JOURNAL OF RARE EARTHS2018年第9期
论文作者：Zhiwen Gao Shihua Liu Pengfei Sun Jung Hyun Jeong Ruijin Yu Bin Deng
文章页码：917 - 923
摘 要：Eu2+-doped bromophosphateapatite Sr5（PO4）3 Br phosphors were synthesized by the conventional hightemperature solid-state reaction.The crystal structure and luminescence properties of the phosphors,as well as their thermal stability and CIE chromaticity coordinates were systematically investigated.Photoluminescence spectra of Sr5（PO4）3 Br:Eu2+ exhibit a single blue emission at 450 nm under the excitation of 345 nm,which is ascribed to the 4 f-5 d transition of Eu2+.The phosphor shows very good thermal stability; The CIE color coordinates are very close to those of BaMgAl10O17:Eu2+（BAM）.All the properties indicate that the blue-emitting Sr5（PO4）3 Br:Eu2+ phosphor has potential application in white LEDs.
Zhiwen Gao1，Shihua Liu1，Pengfei Sun1，Jung Hyun Jeong2，Ruijin Yu1，Bin Deng3
1. College of Chemistry and Pharmacy,Northwest A&F University2. Department of Physics,Pukyong National University3. College of Chemical Biological and Environmental Engineering,Xiangnan University
摘 要：Eu2+-doped bromophosphateapatite Sr5（PO4）3 Br phosphors were synthesized by the conventional hightemperature solid-state reaction.The crystal structure and luminescence properties of the phosphors,as well as their thermal stability and CIE chromaticity coordinates were systematically investigated.Photoluminescence spectra of Sr5（PO4）3 Br:Eu2+ exhibit a single blue emission at 450 nm under the excitation of 345 nm,which is ascribed to the 4 f-5 d transition of Eu2+.The phosphor shows very good thermal stability; The CIE color coordinates are very close to those of BaMgAl10O17:Eu2+（BAM）.All the properties indicate that the blue-emitting Sr5（PO4）3 Br:Eu2+ phosphor has potential application in white LEDs.
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