采用简单的液相法在室温下制备了均匀球形的Ag-SiO2-CeF3 ∶Tb3+核-壳结构纳米复合发光粒子,并对其结构和性能进行了表征.测试结果表明:Ag-SiO2表面包覆上了结晶良好的六方晶系的CeF3∶Tb3+.Ag-SiO2-CeF3∶Tb3+纳米复合粒子为球形,尺寸约为45～60 nm,该纳米复合粒子与CeF3∶Tb3+一样具有良好的特征绿光发射,均以544 nm附近的Tb3+的5D4→7F5跃迁为最强发射峰,内核贵金属Ag纳米粒子对CeF3∶Tb3+发光起到了一定的猝灭作用.Ag-SiO2-CeF3∶Tb3+复合材料在生物检测、疾病治疗方面具有潜在的应用.
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