摘要
以(NH_4)_2HPO_4为沉淀剂采用共沉淀法合成了亚微米级绿色荧光粉LaPO_4∶Ce,Tb(LAP),研究了不同Ce含量和不同pH值对颗粒形貌和结晶性能的影响。XRD和SEM测试结果表明:LaPO_4∶Ce,Tb(LAP)属于正磷酸盐单斜晶系的独居石结构,当Ce^(3+)含量为0.2 mol、pH=7时,产物的杂质相最少,颗粒度及物相最佳,结晶程度较好;粉料颗粒近似为球形,颗粒尺寸范围为148～376 nm。
Sub micron LaPO4：Ce,Tb （LAP） green phosphors was prepared by co-precipitation method with the （NH4）2HPO4 as the precipitator. The influence of different content of Ce and the pH values on the structure and performance of the LaPO4：Ce, Tb （LAP） phosphors were studied. The XRD and SEM photographs showed that the structure of LaPO4：Ce, Tb （LAP） was belong to the monazite phase in phosphate monoclinic system. As the content of Ce^3＋ was 0.2 mol and pH=7, the powder particles appeared in spherical shape with size ranging from 148 nm to 376 nm, and had a higher degree of crystallinity.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2008年第A01期425-427,共3页
Rare Metal Materials and Engineering
基金
江苏大学高级人才启动基金资助项目(05JDGO46)
江苏省"333"工程项目资助(JS2001-78)
关键词
稀土
磷酸盐
绿色荧光粉
共沉淀法
rare earth
phosphate
green phosphor
co-precipitation method
