绿色荧光粉YAGG∶Tb,Gd用于FED的尝试  

The Attempt of YAGG∶Tb, Gd Green Phosphor Used for FED

作　　者：李岚[1] 梁翠果[2] 谢宝森[2] 赵守珍[2] 杜仲[3] 邹开顺[3] 熊光楠[3] 

机构地区：[1]河北工业大学信息学院,天津300130 [2]南开大学信息技术与工程学院,天津300190 [3]天津理工学院材料物理研究所,天津300191

出　　处：《发光学报》2002年第3期252-254,共3页Chinese Journal of Luminescence

基　　金：国家自然科学基金资助项目 (6970 70 0 4) ;天津市教委及天津市"材料物理与化学"重点学科资助项目

摘　　要：FED器件的发展迫切需要具有化学和热稳定性 ,高亮度 ,长寿命的新型荧光材料。本文合成了Gd3 +离子共掺杂的YAGG∶Tb获得了YAGG∶Tb ,Gd ,并将其用于 0～ 30 0 0V低压范围 ,对其在不同电压和电流密度下的发光特性进行了测试。结果表明 。Recent development of field emission display (FED) device require searching for some new kind of phosphor material which can possess low excitation potential, chemical and thermal stability, long service life at high current densities. YAGG∶Tb phosphor has been used as an green phosphor for PTV application. It shows green emission with high brightness and good chromaticity under high energy electron beam excitation. The co activated lanthanon such as Ce,Dy,Gd was study separately and exhibited good brightness. We synthesize and carry on surface perfect the phosphor and try this phosphor to be used in low voltage range such as 0～ 3000V which is suitable for FED. The YAGG∶Tb,Gd powder was synthesized by heating highly pure powders of Tb 2O 3,Ga 2O 3,Gd 2O 3,Al 2O 3, and other flux at 1400～1500℃ in the air. After that, acid and pure water was used to clean the phosphor. At last, polymer binder was used to film the phosphor. The emission peak of YAGG∶Tb,Gd excited by electron ray was in 544nm similar with YAGG∶Tb. Its relative luminescencent brightness change with voltage of electron ray was show in Fig 1. The properties of traditional green phosphor ZnO∶Zn was used as standard. It can be seen that the relative brightness of YAGG∶Tb is higher than that of ZnO∶Zn at 0～3000V excited voltage and the dead voltage was similar with ZnO∶Zn. It has not saturation situation as ZnO∶Zn. Fig 2 shows the change curve of relative brightness of YAGG∶Tb,Gd and ZnO∶Zn with excited current density. YAGG∶Tb,Gd also shows the good behavior . The YAGG∶Tb,Gd was synthesized and improved with suitable method. After compared with ZnO∶Zn, it was concluded that it will be more effective at strong excited condition.

关 键 词：YAGG:Tb Gd 场发射显示器件 绿色荧光粉 发光特性 FED 

分 类 号：TN873.95[电子电信—信息与通信工程] TN104.3