Photoluminescence properties of Ca-doped BaMg Al10O17:Eu2+,Mn2+ blue phosphor using BaF2 and CaF2 as co-flux
来源期刊：JOURNAL OF RARE EARTHS2014年第12期
论文作者：冶林琴 朋兴平 张水合 王育华 常文瑞
文章页码：1109 - 1113
摘 要：Ca-doped Ba Mg Al10O17:Eu2+,Mn2+（BAM） blue phosphors were synthesized by flux assisted solid-state reaction method using Ca F2 and Ba F2 as co-flux.Good dispersity and particle size homogenization of hexagonal pure phase BAM were obtained by sintering at 1400 ℃.The effects of the Ca2+ ions content on the structure, morphology and photoluminescence properties of the phosphors were studied.The results indicated that the incorporation of Ca could decrease the lattice constant, improve the homogeneity and dispersity and enhance the photoluminescence（PL） intensity of the phosphor effectively.The optimum Ba0.86Ca0.04Mg0.97Al10O17:0.1Eu2+,0.03Mn2+ PL intensity was enhanced for about 30% and relative brightness was improved about 4%.Furthermore, the synthesized BAM and commercial BAM phosphors were annealed for 30 min at 600 oC in air.The Ca-doped phosphors had stronger emission intensity, higher brightness and better chromaticity stability than that of the commercial phosphor.These results indicated that Ca-doped blue phosphors had good potential applications in the commercial tricolor fluorescent lamps as well as in other display and lamps.
冶林琴1，朋兴平1，张水合2，王育华2，常文瑞1
1. Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University2. Department of Materials Science, School of Physical Science and Technology, Lanzhou University
摘 要：Ca-doped Ba Mg Al10O17:Eu2+,Mn2+（BAM） blue phosphors were synthesized by flux assisted solid-state reaction method using Ca F2 and Ba F2 as co-flux.Good dispersity and particle size homogenization of hexagonal pure phase BAM were obtained by sintering at 1400 ℃.The effects of the Ca2+ ions content on the structure, morphology and photoluminescence properties of the phosphors were studied.The results indicated that the incorporation of Ca could decrease the lattice constant, improve the homogeneity and dispersity and enhance the photoluminescence（PL） intensity of the phosphor effectively.The optimum Ba0.86Ca0.04Mg0.97Al10O17:0.1Eu2+,0.03Mn2+ PL intensity was enhanced for about 30% and relative brightness was improved about 4%.Furthermore, the synthesized BAM and commercial BAM phosphors were annealed for 30 min at 600 oC in air.The Ca-doped phosphors had stronger emission intensity, higher brightness and better chromaticity stability than that of the commercial phosphor.These results indicated that Ca-doped blue phosphors had good potential applications in the commercial tricolor fluorescent lamps as well as in other display and lamps.
关键词：
