摘要：探讨一种以非极性溶剂液体石蜡为有机相,利用表面活性剂的组装构型控制制备Gd₂O₃:Er³⁺荧光粉,通过改变表面活性剂用量控制粒径大小,采用X射线衍射和扫描电子显微镜分析所制粉体的结构、形貌和粒径大小。结果表明,表面活性剂组装固型法所制备的样品为立方晶相,形貌为球形,粒径均匀。与沉淀法和溶胶-凝胶法所制备的荧光粉相比,表面活性剂组装固型法制备的样品粒径较小,分布较窄,平均粒径为48 nm;荧光粉的激发峰位于380 nm处,发射峰位于563 nm处,表面活性剂组装构型控制制备Gd₂O₃:Er³⁺荧光粉的发光强度显著强于沉淀法和溶胶-凝胶法所制备的荧光粉,其发光强度是沉淀法的4倍以上,是溶胶-凝胶法的10倍以上。

关键词：Gd₂O₃:Er³⁺荧光粉；表面活性剂组装固型法；沉淀法；溶胶-凝胶法

Abstract：Using a non-polar solvent liquid paraffin as organic phase, the surfactants self-assembled configuration control preparation of Gd₂O₃:Er³⁺ fluorescent powder was researched, and the size of the grain diameter was comtrolled through the change of surfactant content. XRD and SEM were used to analyze the prepared powder of structure, morphology and particle. The results indicate that the samples prepared by surfactant-curing method is cubic phase with spherical shape and uniform particle size. With precipitation and sol-gel preparation by the phosphor,the sample is preparated by surfactant-curing method that size is small, narrow distribution, the average particle diameter of 48 nm. The excitation and emission peak is located at 380 nm and563 nm, compared with precipitation and sol-gel method, the sample preparated by surfactant-curing method have a stronger luminescence. The luminous intensity is four times bigger than the precipitation, is a more than 10 times of sol-gel method.

Keywords: Gd₂O₃:Er³⁺ phosphor；surfactant-curing method；precipitation method；sol-gel method