稀土掺杂磷酸钇荧光粉的控制合成和发光性能  

Controlled Synthesis and Luminescence Properties of Rare-earth Doped YPO_4 Phosphor

作　　者：刘旭焱[1] 丁楠[1] 屈重年[1] 朱永胜[1] 卢志文[1] 叶铁[1] 

机构地区：[1]南阳师范学院机电工程学院,河南南阳473061

出　　处：《发光学报》2017年第5期587-593,共7页Chinese Journal of Luminescence

摘　　要：利用水热法分别合成了Ce^(3+)、Tb^(3+)共掺杂的YPO_4下转换荧光粉和Er^(3+)、Yb^(3+)、Tm^(3+)共掺杂的YPO_4上转换荧光粉,经过工艺优化获得了1μm左右尺寸均匀的发光材料。通过系列实验研究了反应温度、反应时间、稀土离子掺杂比例和退火温度对样品发光性能的影响。YPO_4∶Ce^(3+),Tb^(3+)荧光粉在295 nm紫外光的激发下产生下转换发光效应,当Tb^(3+)摩尔分数为1%时得到明亮的绿光;YPO_4∶Er^(3+),Tm^(3+),Yb^(3+)荧光粉在980nm近红外光激发下产生上转换发光效应,当稀土离子中Er^(3+)摩尔分数为3%时,所制备的样品经过1 000℃退火处理后发出很强的暖白光。Ce3＋, Tb3＋ co-doped YPO4 down-conversion phosphors and Er3＋, Tm3＋, Yb3＋ co-doped YPO4 up-conversion phosphors were synthesized by using hydrothennal method. Uniform-sized （ - 1 μm） materials were gained through process optimization. A series of experiments were carried to study the effect of reaction temperature, time, annealing temperature and doping ratio of rare-earth ions on luminescence properties. The down-conversion luminescence nano-material YPO4 ： Ce3 ＋ , 1% Tb3 ＋ emits strong green light excited by 295 nm ultraviolet light,and the up-conversion nano-material YPO4： 3%Er3＋ ,Tm3＋ ,Yb3＋ emits warm white light excited by 980 nm infrared light, respectively.

关 键 词：光致发光 水热合成 荧光猝灭 

分 类 号：O482.31[理学—固体物理]