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Eu3+ Doped CaWO4—A Potential Red Long Afterglow Phosphor

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Abstract

In this study, a series of Eu3+ doped CaWO4 phosphors were synthesized by the solid-state reaction method. Red long afterglow was observed after samples were excited with 254 nm. The main emission peaks were ascribed to the 5D0–7F J (J=0, 1, 2, 3, 4) transitions of Eu3+, and the duration of the optimal sample could last nearly 40 min in the dark seen with naked eyes. The effect of the doping concentration of Eu3+ and alkali metal charge compensators (Li, Na, K) on the luminescent properties of the products were investigated in detail. The proposed mechanism of this afterglow property is also discussed.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 21071034).

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Authors and Affiliations

  1. School of Physics and Optoelectronic Engineering, Guangdong University of Technology, WaiHuan Xi Road, No. 100, Guangzhou, 510006, P.R. China

    F. Kang, Y. Hu, L. Chen, X. Wang, Z. Mu, H. Wu & G. Ju

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  1. F. Kang
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  2. Y. Hu
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  3. L. Chen
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  4. X. Wang
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  5. Z. Mu
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  6. H. Wu
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  7. G. Ju
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Correspondence to Y. Hu.

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Kang, F., Hu, Y., Chen, L. et al. Eu3+ Doped CaWO4—A Potential Red Long Afterglow Phosphor. Appl. Phys. B 107, 833–837 (2012). https://doi.org/10.1007/s00340-012-4957-1

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  • DOI: https://doi.org/10.1007/s00340-012-4957-1

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