Abstract
Novel green-emitting Ba2Y(BO3)2Cl:Ce3+,Tb3+ phosphors were synthesized by a solid-state method. X-ray diffraction and photoluminescence spectra were utilized to characterize the structures and luminescence properties of the as-synthesized phosphors, respectively. Ba2Y(BO3)2Cl:Ce3+,Tb3+ phosphors exhibit blue and green emission bands under the excitation of near-ultraviolet light. An asymmetric blue emission originates from the Ce3+ ion, whereas the green emission originates from the Tb3+ ion. A spectral overlap is found between the emission band of the Ce3+ ion and the excitation band of the Tb3+ ion, which supports the occurrence of the energy transfer from the Ce3+ ion to the Tb3+ ion. Meanwhile, the energy transfer is thoroughly investigated by their photoluminescence decay behaviors. The energy-transfer efficiency from the Ce3+ ion to the Tb3+ ion is also calculated, and a possible mechanism is proposed.
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Acknowledgements
This work was financially supported by the National Natural Science Foundation of China (Nos. 20976002 and 51002146), the Beijing Natural Science Foundation (No. 2122012), the Funding Project for Academic Human Resources Development in Institutions of Higher Learning under the Jurisdiction of Beijing Municipality (PXM 2011_014213_113560, 113522), the Fundamental Research Funds for the Central Universities (2010ZY35 and 2011YYL131), and the Funds of the State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences (RERU2011014).
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Sun, J., Lai, J., Xia, Z. et al. Luminescence properties and energy transfer in Ba2Y(BO3)2Cl:Ce3+,Tb3+ phosphors. Appl. Phys. B 107, 827–831 (2012). https://doi.org/10.1007/s00340-012-4961-5
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DOI: https://doi.org/10.1007/s00340-012-4961-5