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

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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.

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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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Authors and Affiliations

  1. College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 210009, China

    Yu-Jie Ding, Li-Xi Wang & Qi-Tu Zhang

  2. School of Materials Engineering, Yancheng Institute of Technology, Yancheng, 224051, China

    Peng-De Han

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  1. Yu-Jie Ding
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Correspondence to Qi-Tu Zhang.

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Ding, YJ., Han, PD., Wang, LX. et al. Preparation, morphology and luminescence properties of Gd2O2S:Tb with different Gd2O3 raw materials. Rare Met. 38, 221–226 (2019). https://doi.org/10.1007/s12598-015-0577-3

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  • DOI: https://doi.org/10.1007/s12598-015-0577-3

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