反应pH值对水热法合成PbF_2:Er^(3+),Yb^(3+)荧光粉性能的影响  

Effect of pH Value on Up-conversion Luminescence Properties of PbF_2:Er^(3+),Yb^(3+) Phosphor by Hydrothermal Synthesis Method

作　　者：王博[1] 柏朝晖[1] 常芙嘉 

机构地区：[1]长春理工大学材料科学与工程学院,长春130022

出　　处：《长春理工大学学报（自然科学版）》2014年第4期48-51,共4页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金(50472027;61307118)

摘　　要：本文以PbF2为基质,Er3+为激活剂,Yb3+为敏化剂,采用水热法,通过严格控制pH值,成功制备了PbF2:Er3+,Yb3+上转换发光材料。采用X射线衍射仪和荧光分光光度计分析了样品的结构和发光性能,结果表明,当pH值=4时,产物为立方晶系纯相PbF2,上转换发光性能最佳。在980nm光激发下,样品发射源于Er3+离子2H11/2→4I15/2、4S3/2→4I15/2能级跃迁的绿光(520~570nm)和4F9/2→4I15/2能级跃迁的红光(650~680nm)。In this paper,Er^3＋,Yb^3＋co-doped PbF2（PbF2：Er^3＋,Yb^3＋）up-conversion luminescence materials were successfully prepared by hydrothermal method through the strict controlling of pH value with PbF2 as matrix,Er^3＋as activator,Yb^3＋as sensitizer. The structure and the luminescent properties of the samples were analyzed and investigated by X-ray diffraction（XRD）and Fluorescence Spectrophotometer,the experimental results showed that when pH value is3,the product is pure phase of cubic PbF2,synthesis result and the prepared up-conversion luminescence property are the best. Under optical of 980 nm excitation,the sample is emitted from the Er3 ＋of sample in green light（520-570nm） of^2H11/2-^4I15/2,^4S3/2-^4I15/2energy level transition and red light（650-680nm）of^4F9/2-^4I15/2energy level transition.

关 键 词：PbF2:Er^3+ Yb^3+ 上转换发光 水热法 

分 类 号：O482.31[理学—固体物理]