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Synthesis of Sr4Al2O7:Eu2+/Dy3+ phosphors by the solid-state reaction and luminescent properties

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Abstract

Sr4Al2O7:Eu2+/Dy3+ phosphors are synthesized by the solid-state reaction. The obtained powders are characterized by XRD, SEM and luminescent spectrometer. The effects of the mole ratios of Dy3+/Eu2+ on luminescent properties of Sr4Al2O7:Eu2+/Dy3+ phosphors are investigated. The XRD pattern indicates that the powders have pure Sr4Al2O7 phase. The SEM micrographs reveal that Sr4Al2O7:Eu2+/Dy3+ phosphors show similar irregular morphology. Under the excitation of 360 nm, Sr4Al2O7:Eu2+/Dy3+ phosphors exhibit the characteristic emission band originating from the 4f65d1 → 4f7 transition of Eu2+ ions. The emission intensity increases with the increasing mole ratio of Dy3+/Eu2+ up to 3 and then decreases. Thermalluminescence results indicate that the persistent afterglow of Sr4Al2O7:Eu2+/Dy3+ phosphors is generated by suitable electron traps formed by the Dy3+ ions within the host.

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Acknowledgments

The work is supported by the Fundamental Research Funds for the Central Universities No. 2015MS108.

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Authors and Affiliations

  1. Department of Power Engineering, School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding, 071003, People’s Republic of China

    Zhijian Liu, Lingbin Meng & Boxiang Liu

  2. Department of Electrical Engineering, School of Electrical and Electronic Engineering, North China Electric Power University, Baoding, 071003, People’s Republic of China

    Sijia Chen

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  1. Zhijian Liu
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  2. Sijia Chen
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  3. Lingbin Meng
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  4. Boxiang Liu
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Correspondence to Zhijian Liu.

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Liu, Z., Chen, S., Meng, L. et al. Synthesis of Sr4Al2O7:Eu2+/Dy3+ phosphors by the solid-state reaction and luminescent properties. J Mater Sci: Mater Electron 26, 6395–6398 (2015). https://doi.org/10.1007/s10854-015-3228-4

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  • DOI: https://doi.org/10.1007/s10854-015-3228-4

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