白光LED用Ca_6Sr_4(Si_2O_7)_3Cl_2:Ce^(3+),Eu^(2+),Sm^(3+)荧光粉的合成及其发光性质

Synthesis and Luminescence Properties of Ca_6Sr_4(Si_2O_7)_3Cl_2: Ce^(3+), Eu^(2+), Sm^(3+) Phosphor for White LED

采用传统的高温固相法合成了Ce3+,Eu2+,Sm3+离子分别单激活和三种稀土离子共激活的Ca6Sr4(Si2O7)3Cl2荧光粉,并通过X射线粉末衍射、荧光光谱和CIE色坐标对其结构和发光性质进行了研究。荧光粉Ca5.91Sr3.96(Si2O7)3Cl2:0.02Ce3+,0.04Eu2+,0.04Sm3+在365 nm激发下能发射高强度白光,其色坐标为x=0.2183,y=0.2187,有望成为一种新型白光LED灯用荧光粉。

Ce3＋, Eu2＋, Sm3＋ single/co-activated Ca6Sr4（Si2O7）3C12 phosphors were synthesized by conventional solid-state reactions, and their structures and luminescence properties were investigated by X-ray power diffraction, fluorescence spectra and CIE chromaticity coordinates. The phosphor Ca5.91Sr3.96（Si2O7）3C12∶0.02Ce3＋,0.04Eu2＋,0.04Sm3＋ emit strong white light under 365 nm excitation, and its chromaticity coordinates is x = 0.2183, y = 0.2187. The phosphor is promising for a new white LED lamp phosphor.