采用高温固相法合成了Tb3+激活的硅酸盐基质的系列发光材料Li2BaSiO4∶xTb3+,并研究了其在紫外光激发下的发光特性.研究结果表明,样品Li2BaSiO4∶xTb3+的激发光谱最强吸收源于Tb3+的4f7→5d1跃迁宽带吸收,最强吸收峰值位于268 nm左右.在紫外光激发下该系列材料均呈现Tb3+的特征绿光发射(542nm),最佳掺杂浓度为x=0.11.样品Li2BaSiO4∶0.11Tb3+的荧光衰减曲线呈单指数衰减特征,拟合所得的寿命值为5.0ms左右.
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