以一缩二乙二醇为溶剂,采用多醇法 (polyol method) 合成LaPO4:Eu3+纳米发光材料,利用XRD、 FE-SEM、 TG-DTA、 Uv-vis光谱、光致发光光谱 (PL) 及寿命等手段进行了表征. 结果表明: 所得到的材料结晶完好,具有LaPO4的独居石型结构;粒子的形貌为球形,其粒径约为25 nm;在波长为258 nm的紫外光激发下,其发射光谱由Eu3+的5D0-7FJ (J=1,2,3,4) 特征发射组成,在592 nm处的磁偶极跃迁(5D0-7F1)最强,表现为Eu3+的橙-红特征发射;LaPO4:Eu3+纳米粒子中Eu3+的最佳掺杂浓度为5%(摩尔比);Eu3+的光致发光衰减曲线符合单指数行为,其寿命(τ)为3.9 ms.
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