Abstract
The bluish-green KBaY(BO3)2:Eu2+ phosphors were prepared by high-temperature solid state reaction method. The photoluminescence properties, concentration quenching and energy transfer as well as the luminescence decays were investigated. The emission spectrum showed a single intensive band centered at 500 nm, which correspond to the 4f 65d 1 → 4f 7 transition of Eu2+. The optimal concentration for the luminescence of Eu2+ in KBaY(BO3)2:Eu2+ was determined to be 0.03 mol. The critical energy transfer distance was calculated as 21.34 Å. The corresponding concentration quenching mechanism was verified to be a dipole–dipole interaction. And the blue-shift behavior of KBaY(BO3)2:Eu2+ with increasing temperature was analyzed by the configurational coordinate diagram. The results indicate that the KBaY(BO3)2:Eu2+ phosphors have potential applications as an ultraviolet-convertible phosphor due to its effective excitation in the ultraviolet rang.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (Grant No. 21571162) and the Guangdong Province Enterprise-University-Academy Collaborative Project (No. 2012B091100474).
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Xu, R., Shi, C., Liang, Y. et al. Synthesis and photoluminescence properties of KBaY(BO3)2:Eu2+ bluish-green phosphor. J Mater Sci: Mater Electron 28, 1402–1408 (2017). https://doi.org/10.1007/s10854-016-5674-z
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DOI: https://doi.org/10.1007/s10854-016-5674-z