采用高温固相法制备了Eu3+掺杂的KMgLa(PO4)2荧光粉.采用X射线衍射技术及光谱技术研究了材料的晶相及发光特性.研究结果显示,少量的Eu3+并未影响KMgLa(PO4)2的晶相;以260 nm紫外光或394 nm近紫外光作为激发源时,KMgLa(PO4)2∶Eu3+都发射红色光,主发射峰位于595 nm,对应Eu3+的5 D0→7F2跃迁发射;随着Eu3+掺杂量的逐渐增大,对应KMgLa(PO4)2∶ Eu3+材料的发射强度随之增大,当掺杂量为0.06Eu3+时,发射强度最大,且存在浓度猝灭现象,对应的临界距离为1.696 nm;材料的CIE参数显示,材料位于红色区域.
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