中文摘要：

采用高温固相法合成了FED用Y2O3：Eu红色荧光粉，为提高其导电性，采用表面成膜包覆法对其进行了In2O3包膜研究。通过XRD，Zeta电位，SEM及低压光谱分析等检测手段分析了包膜前后Y2O3：Eu的晶体结构、电位、形貌与发光性能，探索了包膜工艺。结果表明：在Y2O3：Eu表面包覆3％的In2O3能有效改善荧光粉的发光亮度，这种改善的可能原因是包覆In2O3改善了Y2O3：Eu晶粒表面的导电性。

英文摘要：

Y2O3：Eu red phosphor for FED application was prepared by high temperature solid-state reaction. The In2O3 coating by precipitation method to the phosphor was applied to promote the conductivity of particles. The analyses of XRD, Zeta potential, SEM, EDS and low voltage cathodoluminescence （CL） were conducted for investigating the crystal structure, potential, morphology and luminescence properties of coated and uncoated Y2O3：Eu. And the processing of coating was discussed. The results show that 3% In2O3 coating promotes the low voltage CL of the phosphor efficiently. The promotion is possibly due to the enhancement of the surface conductivity of the Y2O3： Eu phosphor grains, which attribute to the In2O3 coating.