作　　者： ; ; ; ; ; ; ; ;

机构地区： 暨南大学

出　　处： 《暨南大学学报（自然科学与医学版）》 2003年第5期93-96,共4页

摘　　要： 　首次采用微波法合成橙红色长余辉磷光粉:Gd2O2S:Sm3+,并表征了其结构,激发、发射光谱和余辉衰减曲线.XRD分析证实其为单相的硫氧化钆.光致发光光谱显示Sm3+的3个特征发射(4G5/2→6HJ,J=5/2,7/2,9/2).该磷光粉经紫外和可见光激发后呈现出长时间明亮的余辉发射,是一种性能良好的新型长余辉发光材料. Sm^(3+) doped gadolinium oxysulfide phosphor,which has the orange-red long afterglow emission,was synthesized by microwave radiation method. The synthesized phosphors were characterized by X-ray diffraction. The excitation and photoluminescence spectra,afterglow spectra and afterglow decay curves were examined. XRD confirmed the phosphor as pure phase of Gd_2O_2S. The phosphors showed three typical transitions of Sm^(3+)(()~4G_(5/2)→()~6H_J,J=5/2,7/2,9/2). A prominent phosphorescence can be seen in this phosphor after illuminated with UV light or visible light.

关 键 词： 微波法 长余辉 硫氧化钆 钐离子

领　　域： [理学] [理学]