提高等离子荧光粉发光性能的实验研究  

STUDY ON IMPROVING THE PERFORMANCE OF PHOSPHOR POWDER

作　　者：马超[1] 雷玉勇[1] 顾东雅[2] 钱辉[3] 邱刚[1] 邵义[4] 

机构地区：[1]西华大学机械工程与自动化学院,成都610039 [2]盐城纺织职业技术学院 [3]北京对外经济贸易大学 [4]沈阳工业大学材料科学与工程学院,110023

出　　处：《中国陶瓷工业》2006年第5期21-25,20,共6页China Ceramic Industry

基　　金：西华大学重点学科建设资助项目;四川省应用基础研究资助项目(项目编号:05202073)

摘　　要：对几种等离子荧光粉的发光和发射性能进行了测试,选择了蓝色和绿色荧光粉用高温固相反应法进行掺杂Mg、Sr、Eu、La、Ca等稀土离子,来提高荧光粉的发光性能。发光性能的测试结果表明,在一定浓度范围内,Sr,La和Mg的掺杂能够有效地提高BaAl12O19:Mn在真空紫外线激发下的发光强度;晶体结构中,Mg取代了部分Al的晶格位置,Sr和La取代了部分Ba的晶格位置。Mg的掺杂使得BaAl12O19:Mn晶胞参数中的a值增大,c值减小,晶胞体积增大,而Sr和La对Ba的取代使得BaAl12O19:Mn的a,c值和晶胞体积都减小,因而减小了对发光有害的缺陷浓度,并增加了荧光粉的热稳定性,减少了余辉长度,提高了荧光粉的发光性能。Tests were conducted of luminescent properties and emitting characteristics of several PDP phosphors. To promote the phosphor luminescence performance, green BaAl12O19：Mn and blue BaMgAl10O17：Eu2^＋ phosphors were doped with Mg, Sr, Eu, La and Ca ions through high temperature solid state reaction, Experiment results show： light intensity of BaAl12O19：Mn under vacuum ultraviolet （VUV） excitation was enhanced with doping contents of Sr, La and Mg in a specified range; Mg substituted for part of AI, while Sr and La for part of Ba; Mg doping increased the lattice parameter a of BaAl12O19：Mn, while decreased its c, and the lattice volume became bigger; however, substitution of Sr and La for Ba decreased both a and c of BaAl12O19：Mn, and the lattice volume became smaller, thus lowering the defect concentration which was harmful to lighting, strengthening the thermal stability of phosphors, reducing the length of after-glow and improving the luminous intensity of PDP powders：

关 键 词：荧光粉 发光强度 高温固相反应 晶格 稀土 

分 类 号：TQ422[化学工程]