Abstract
A series of Sr2.4Y0.2Eu0.2V2O8:xNa+(yBa2+) and Sr2.4Y0.2Eu0.2V2O8:zNb5+(mP5+) phosphors are synthesized by solid-state reaction method and the photoluminescence (PL) properties are investigated. All phosphors exhibit bright red emission centered at ∼619 nm. Na+ and Ba2+, as the sensitizers for the luminescence of Eu3+, are found to improve significantly the PL intensity of these phosphors. For the Sr2.4Y0.2Eu0.2V2O8:xNa+(yBa2+) samples, the emission intensity increases with Na+(Ba2+) doping, and the strongest intensity is achieved in the case when x is 0.09 and y is 0.15. The introduction of Nb(P)O4 3− reduces the non-radiative energy transfer between neighboring VO4 3− and results in the energy transfer between VO4 3− and Eu3+, and eventually leads to the enhancement of Eu3+ emission. Comparing the doping effect of between Na and Ba, and the effect between Nb and P, respectively, it is found that both Na and P doping largely tend to improve the emission intensity. The relevant mechanisms have been discussed.
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ACKNOWLEDGEMENTS
This work was financially supported by the National Natural Science Foundation of China under Grant Nos. 11204001 and 11174004, Anhui Provincial Natural Science Foundation (12080 85QA07 and 1308085MA04), and the Higher Educational Natural Science Foundation of Anhui Province (KJ2013A031). This work was also supported by Anhui University Scientific Research Fund (KYXL2013009), “211 Project” of Anhui University (SZJYKC2013020). National Training Programs of Innovation and Entrepreneurship for Undergraduates (201410357005).
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Mu, J.J., Zheng, G.H., Dai, Z.X. et al. Photoluminescence Properties of Na+(Ba2+) and Nb5+(P5+)-Doped Sr2.4Y0.2Eu0.2V2O8 Phosphors. J. Electron. Mater. 45, 3367–3374 (2016). https://doi.org/10.1007/s11664-016-4530-5
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DOI: https://doi.org/10.1007/s11664-016-4530-5