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Enhanced luminescent intensity of Sr2SiO4:Tb3+ phosphors by charge compensation (Li+) addition

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Abstract

In this paper, structural and optical properties of terbium doped strontium silicate phosphors (Sr2SiO4) synthesized by conventional solid state reaction method were investigated. Doping ways (stoichiometrically and nonstoichiometrically) of charge compensation Li2CO3 were discussed. The concentration of Tb3+ also had an influence on the optical properties of the phosphors. X-ray diffraction (XRD), photoluminescence spectra, ultraviolet visible spectrophotometer, as well as fluorescent decay curves were employed to characterize the samples. XRD patterns confirmed that the Sr2SiO4 phosphors exhibited orthorhombic structure and that the Tb3+ substitution of Sr2+ did not change the structure of the Sr2SiO4 host. It was shown in the luminescence measurements that the emission intensity of powders with Li+ doped nonstoichiometrically was stronger than that of powders with Li+ doped stoichiometrically. And the emission intensity reached the maximum when the concentration of Tb3+ was 3 mol%. The optimized properties of the phosphors demonstrated that the Sr2SiO4:Tb3+ was a promising luminescent material.

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Acknowledgments

The authors acknowledge the generous financial support from Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) and National Science Foundation of China (51202111).

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Authors and Affiliations

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

    Xiaojuan Yang, Bing Zhang, Tian Xu, Lixi Wang & Qitu Zhang

  2. Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing, 210009, China

    Xiaojuan Yang, Bing Zhang, Tian Xu, Lixi Wang & Qitu Zhang

  3. Nanjing Center, China Geological Survey, Nanjing, 210009, Jiangsu, China

    Jialin Shen

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  1. Xiaojuan Yang
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  2. Bing Zhang
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  3. Tian Xu
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Correspondence to Lixi Wang.

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Yang, X., Zhang, B., Xu, T. et al. Enhanced luminescent intensity of Sr2SiO4:Tb3+ phosphors by charge compensation (Li+) addition. J Mater Sci: Mater Electron 27, 9448–9453 (2016). https://doi.org/10.1007/s10854-016-4991-6

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  • DOI: https://doi.org/10.1007/s10854-016-4991-6

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