采用高温固相法制备了Ba3La1-x-y(PO4)3∶ xDy3+,yEu3+白光荧光粉,并通过XRD和荧光光谱性能分析手段对样品的物相组成、发光性能和发光机理进行了研究.结果表明:由于Eu3+的掺杂影响了Ba3La(PO4)3∶ Dy3+荧光粉的晶体场环境,在Dy3+的6F9/2能级与Eu3+的5D0能级间发生交叉弛豫,并通过能量共振转移,Dy3向Eu3+传递能量,Ba3La1-x-y(PO4)3∶xDy3+,yEu3+荧光粉在350 nm紫外光激发下同时出现了Dy3+和Eu3+的特征发射,发射光谱中增加了红光成分,改善了色温.实验得出Dy3+和Eu3+掺杂浓度分别为0.08和0.06时,荧光粉的发射光最接近于理想白光.
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