Na_3La_9B_8O_(27):Ln^(3+)(Ln=Eu或Tb)荧光体的制备与发光性能  

Preparation and Photoluminescent Properties of Phosphors Na_3La_9B_8O_(27):Ln^(3+)(Ln=Eu or Tb)

作　　者：张鲁宁[1] 李志华[1] 

机构地区：[1]山东师范大学化学化工与材料科学学院,山东济南250014

出　　处：《华东交通大学学报》2008年第4期80-84,99,共6页Journal of East China Jiaotong University

基　　金：国家自然科学基金资助项目(50702031)

摘　　要：采用高温固相合成技术、溶胶-凝胶法、助熔剂法制备了Na3La9B8O27:Ln3+(Ln=Eu或Tb)荧光体,确定了固相反应制备该荧光体适宜的组分比例.分别测试、解释了Na3La9B8O27:Eu3+和Na3La9B8O27:Tb3+激发光谱和发射光谱.比较了不同方法制备的荧光体的发光效率,并对产生的差异进行分析和讨论,助熔剂法得到的荧光体发光效率最高.Na3La9B8O27：Ln^3＋ （Ln = Eu or Tb）phosphors have been prepared by solid state reaction, sol-gel process technique and fluxes technique, respectively. The optimal initial ratios have been determined in the solid state reaction process. The excitation and emission spectra of Na3La9B8O27：Ln^3＋ and Na3La9B8O27 ： Tb3 ＋ are measured and explained. The different photoluminescent efficiency of the various prepared phosphors is studied and discussed. The phosphors fabricated by fluxes technique have the most luminescent efficiency.

关 键 词：Na3La9B8O27:Ln^3+(Ln=Eu或Tb) 高温固相合成 溶胶-凝胶法 助熔剂 

分 类 号：O614.33[理学—无机化学] O612.6[理学—化学]