采用溶胶-凝胶法在室温条件下制备了掺杂Tb3+的复合材料LaF3 -SiO2,通过XRD、TG-DTA、IR、激发和发射光谱研究了材料的结构和发光性能.结构表测试表明,在高于494℃时LaF3-SiO2:Tb3+转变为稳定的氟铈矿六方结构,800℃退火处理后,材料主要存在Si-O-Si键；发光性能研究表明,最佳退火温度为800℃；样品在544nm监测波长下,最佳激发波长为228nm,Tb3+的最佳掺杂摩尔浓度为0.48％.
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