采用高温固相法反应制备Ba0.11Sr2.89-2xCexNaxAlO4F(x =0.01,0.02,0.05,0.07,0.10,0.15)荧光粉.Ba0.11Sr2.89AlO4F体系中存在Sr(1)2+和Sr2+(2)两个格位.Sr2+(1)离子位于Wyck.4a格位,为十配位多面体构型.Sr2+(2)离子位于Wyck.8h格位,为八配位的多面体构型.研究了Ba0.11Sr2.89-2xCexNaxAlO4F荧光粉的紫外-可见激发、发射光谱、荧光寿命及能量传递过程,讨论并指认了Ce3+在上述两个格位中的激发带位置及能级重心,发射光谱曲线分别由两个～463,～505和～ 550 nm宽带发射构成.随着Ce3+浓度增加,长波发射～ 550 nm 逐渐增强,而色品坐标(x =0.199,y=0.351)蓝绿区逐渐变化到黄绿区域(x=0.389,y=0.489).
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