Eu^2＋-doped Sr5(PO4)3Br blue-emitting phosphor with high color purity for near-UV-pumped white light-emitting diodes  

作　　者：Zhiwen Gao Shihua Liu Pengfei Sun Jung Hyun Jeong Ruijin Yu Bin Deng 

机构地区：[1]College of Chemistry and Pharmacy,Northwest A&F University, Yangling 712100, China [2]College of Chemical Biological and Environmental Engineering, Xiangnan University, Chenzhou 423043, China [3]Department of Physics, Pukyong National University, Busan 608-737, Republic of Korea

出　　处：《Journal of Rare Earths》2018年第9期917-923,共7页稀土学报（英文版）

基　　金：Project supported by the Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications;the Construct Program of the Key Discipline in Hunan Province for Financial Support;the Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Science,ICT and Future Planning(2015060315)

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.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.

关 键 词：Bromophosphate Luminescence EU^2 ＋ ion Rare earths 

分 类 号：TQ422[化学工程]