Abstract
The Tb3+/Eu3+ co-activated CaSnO3 nano-phosphors have been prepared by a sol–gel technique. The emission and excitation spectra as well as the luminescence decay behaviors were investigated. When excited at 378 nm, CaSnO3:Tb3+ phosphors exhibit green-emitting color with the strongest peak at 542 nm. After increasing the contents of Eu3+, the emitting color of the co-activated CaSnO3 phosphors presents varied hues from green through white and eventually to red by energy transfer (ET) from Tb3+ to Eu3+. The mechanism of ET has been determined to be a quadrupole–quadrupole interaction. The results indicate that CaSnO3:Eu3+, Tb3+ might be served as an UV-convertible color-tunable phosphor.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (Grant No. 51402088) and the Fundamental Research Fund of provincial universities for young scientific talents (0000A40545).
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Xie, J., Shi, Y., Zhang, F. et al. CaSnO3:Tb3+, Eu3+: a distorted-perovskite structure phosphor with tunable photoluminescence properties. J Mater Sci 51, 7471–7479 (2016). https://doi.org/10.1007/s10853-016-0021-6
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DOI: https://doi.org/10.1007/s10853-016-0021-6