Preparation, morphology and luminescence properties of Gd_2O_2S:Tb with different Gd_2O_3 raw materials

作     者：Yu-Jie Ding Peng-De Han Li-Xi Wang Qi-Tu Zhang 

作者机构：College of Materials Science and EngineeringNanjing Tech University School of Materials EngineeringYancheng Institute of Technology 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2019年第38卷第3期

页      面：221-226页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：financially supported by the National Natural Science Foundation of China (No. 51202111) the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) 

主　　题：Precursor Phosphor Luminescence Homogeneous precipitation Sulfide fusion 

摘      要：The sulfide fusion method was used to synthesize Gd_2 O_2 S:Tb phosphors using commercial Gd_2 O_3 and freshly prepared Gd_2 O_3, respectively. The freshly prepared Gd_2 O_3 was synthesized from Gd_2 O(GO_3)_2·H_2 O precursor prepared by homogeneous precipitation *** structure and morphology of the composites were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM) and energy dispersive spectroscopy(EDS). The result shows that the Gd_2 O_2 S:Tb phosphor prepared by commercial Gd2 O3(GOST-A) presents agglomerated particles with average particle size of2.1 μm; however, Gd_2 O_2 S:Tb produced from as-prepared Gd_2 O_3(GOST-B) tends to form regular hexagon particles with the average particle size of 1 μm. Furthermore, Gd3+and Tb3+ contents in GOST-B are higher than that in GOST-A. In addition, fluorescent properties were analyzed by fluorescent spectrophotometer. It is indicated that similar excitation and emission spectra can be obtained from the two phosphors, but the luminescence intensity of GOST-B is higher than that of GOST-A.