采用微波辅助凝胶燃烧法成功地合成了Sr2ZnSi2O7∶Tb3+硅酸盐绿色发光材料.通过X线粉末衍射表征了材料的物相结构,用荧光分光光度计表征了材料的光致发光性能,同时对Tb3+浓度及助熔剂H3BO3用量等对材料发光性质的影响进行了研究.结果表明:该材料与Sr2ZnSi2O7具有相同的晶体结构,同属四方晶系.Sr2ZnSi2O7∶Tb3+的激发光谱由位于200～300 nm的1个宽带和位于325～400 nm的1组窄峰组成,前者属于Tb3+ 4f8→4f7 5d的跃迁,后者由Tb3+离子的f→f跃迁引起;样品的发射光谱由位于414,436,490,543,584 nm处的一系列窄带发射峰组成,均属于Tb3+的特征发射.其中,543 nm处发射峰最强,因而样品发绿光.同时,确定了Tb3+的最佳掺杂量为摩尔分数x(Tb3+) =0.08,H3BO3的最佳用量摩尔分数x(H3BO3) =0.15.
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