NaZnLa(PO4)2中Ce3+和Tb3+的发光

被引:7
|
作者
曹金全
王淑彬
铁绍龙
苏锵
机构
[1] 中国科学院长春应用化学研究所稀土化学与物理开放研究实验室!吉林长春
[2] 华南师范大学化学系!广东广州
关键词
二磷酸镧锌钠; 铈; 铽; 发光;
D O I
暂无
中图分类号
O48231 [];
学科分类号
摘要
采用高温固相反应合成了NaZnLa(PO4 ) 2 中掺杂Ce3 +、Tb3+的荧光体 ,对其晶体结构、发光行为进行了研究 ,并尝试对NaZnLa(PO4 ) 2 ∶Ce ,Tb荧光体进行调制。NaZnLa(PO4 ) 2 是LaPO4 的同构物 ,为单斜晶系独居石结构 ,从XRD谱数据得到NaZnLa(PO4 ) 2 基质的晶胞参数为a =0 6 82 3nm ,b =0 70 45nm ,c =0 6 497nm ,β =10 3 9° ,V =0 30 3nm3,其晶胞参数与单斜LaPO4 的晶胞参数相似。在NaZnLa(PO4 ) 2 ∶Ce ,Tb荧光体中 ,Ce3 +对Tb3+有良好的敏化作用 ,掺杂适量的BO3 -3 、Al3 +、Dy3 +,可以增强发光亮度
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页码:288 / 292
页数:5
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