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Rare Metals

, Volume 38, Issue 3, pp 221–226 | Cite as

Preparation, morphology and luminescence properties of Gd2O2S:Tb with different Gd2O3 raw materials

  • Yu-Jie Ding
  • Peng-De Han
  • Li-Xi Wang
  • Qi-Tu ZhangEmail author
Article

Abstract

The sulfide fusion method was used to synthesize Gd2O2S:Tb phosphors using commercial Gd2O3 and freshly prepared Gd2O3, respectively. The freshly prepared Gd2O3 was synthesized from Gd2O(CO3)2·H2O precursor prepared by homogeneous precipitation method. The 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 Gd2O2S:Tb phosphor prepared by commercial Gd2O3 (GOST-A) presents agglomerated particles with average particle size of 2.1 µm; however, Gd2O2S:Tb produced from as-prepared Gd2O3 (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.

Keywords

Precursor Phosphor Luminescence Homogeneous precipitation Sulfide fusion 

Notes

Acknowledgments

This study was financially supported by the National Natural Science Foundation of China (No. 51202111) and the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

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Copyright information

© The Nonferrous Metals Society of China and Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.College of Materials Science and EngineeringNanjing Tech UniversityNanjingChina
  2. 2.School of Materials EngineeringYancheng Institute of TechnologyYanchengChina

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