绿色荧光材料YVO4：Er制备及其发光性能研究

The Synthesize and performance of green luminescent material YVO4：Er

以柠檬酸作为络合剂，采用溶胶-凝胶法制备了绿色荧光材料YVO4：Er，采用XRD、荧光光谱仪、SEM对产物的相组成、发光性能和颗粒形貌进行了分析和观测。结果表明，实验所得产物为单一的四方锆型YVO4：Er晶体；产物能够被200-320nm的紫外光激发，发出明亮的绿色荧光，前驱体在900℃焙烧、保温2h时，产物的发光性能最佳。

Green fluorescent material YVO4：Er was synthesized by citrate-gel （CG） method. Through X-ray diffraction （XRD）, fluorescence spectra and SEM, the author made a analysis of the structure, crystal size,luminescence properties and morphology of YVO4：Er. the results show that the products are pure tetragonal YVO4：Er, Crystal size is about 20nm; YVO4：Er can be excited by 200-320nm ultraviolet radiation,and emits bright green fluorescence. When the precursor was annealed at 900℃ and holding 2h,the product shows the best Luminescent performance.