Preparation and characterization of monodisperse spherical particles of X-ray nano-phosphors based on Gd_2O_2S:Tb  

作　　者：XING MingMing CAO WangHe PANG Tao LING XiaoQiao CHEN Ning 

机构地区：[1]Optoelectronic Technology Institute, Dalian Maritime University, Dalian 116026, China

出　　处：《Chinese Science Bulletin》2009年第17期2982-2986,共5页

基　　金：Supported by the National Natural Science Foundation of China (Grant No. 10374011)

摘　　要：Monodisperse spherical Gd2O2S:Tb nanoparticles have been prepared using an improved homogeneous precipitation method combined with solid-gas sulfuration technology. The effects of Tb3+-doped concentration on luminescent intensity and color purity of samples were investigated, and the optimal Tb3+-doped concentration was determined. Under the excitation of X-ray, the obtained sample shows excellent luminescent properties, and its luminescent intensity is increased by about 50% under lower sulfuration temperature compared with that of the Gd2O2S:Tb nanoparticles prepared by complex precipitation method.Monodisperse spherical Gd2O2S：Tb nanoparticles have been prepared using an improved homogeneous precipitation method combined with solid-gas sulfuration technology. The effects of Tb3＋-doped concentration on luminescent intensity and color purity of samples were investigated, and the optimal Tb3＋-doped concentration was determined. Under the excitation of X-ray, the obtained sample shows excellent luminescent properties, and its luminescent intensity is increased by about 50% under lower sulfuration temperature compared with that of the Gd2O2S：Tb nanoparticles prepared by complex precipitation method.

关 键 词：纳米荧光粉 球形颗粒 铽掺杂 单分散 X射线 制备 均匀沉淀法 基础 

分 类 号：TN104.3[电子电信—物理电子学] TB44[一般工业技术]