Tm^(3+)单掺杂及Tm^(3+),Dy^(3+)共掺杂YP_(1-x)V_xO_4荧光粉的光谱性质(英文)  

Luminescent Properties of YP_(1-x)V_xO_4:Tm^(3+) and YP_(1-x)V_xO_4:Tm^(3+),Dy^(3+) Phosphors

作　　者：颜斌[1] 张翔清[2] 赖华生[1] 陈宝玖[2] 王晓君[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所激发态物理重点实验室 [2]大连海事大学物理系,辽宁大连116026

出　　处：《发光学报》2007年第4期531-536,共6页Chinese Journal of Luminescence

基　　金：国家自然科学基金(50572102,10274083);"863"计划(2002AA311160);吉林省杰出青年基金(20040113)资助项目~~

摘　　要：采用共沉淀法制备了Tm3+单掺杂及Tm3+,Dy3+共掺杂的YP1-xVxO4荧光粉材料。给出了样品的XRD谱,获得了样品的SEM照片,对其发射和激发光谱也进行了测量。结果发现,随着钒酸根含量的增加,样品的激发带发生红移,这样的激发带能够满足白光LED用荧光粉的激发要求。在Tm3+,Dy3+共掺杂的样品中观测到了全色的发射,并且红、绿、蓝三个发射组分的比例也可以调整。我们计算了不同样品的色坐标,发现均在白光范围内,可见该体系样品有希望成为一种全色发射的白光LED用荧光粉。Tm^3＋-doped and Tm^3＋,Dy^3＋-codoped YP1-xVxO4 phosphors were synthesized by co-precipitation reaction. The X-ray powder diffraction,photoluminescence,photoluminescence excitation spectra and luminescence decay were measured. With increasing the amount of vanadate group,the excitation band shifts to the lower energy that sati-sfies the application demand for the LED phosphors. Tm^3＋and Dy^3＋ co-doped samples exhibited full color emission with various red-green-blue intensity rates. The chromaticity coordinates of YP1-xVxO4：Tm^3＋,Dy^3＋ phosphors were calculated. It was found that the chromaticity coordinates are dependent on both the ratios of P/V and Tm/Dy. This phosphor system with proper composition and dopants may be a promising phosphor candidate for white light emitting LED applications.

关 键 词：发光材料 能量传递 荧光粉 色坐标 

分 类 号：TQ171.112[化学工程—玻璃工业]