Abstract
A series of Sr3Sc1−x (PO4)3:xDy3+ phosphors have been synthesized via a conventional high-temperature solid-state reaction method. X-ray powder diffraction (XRD), fluorescent spectrophotometry, concentration quenching mechanism and luminescence lifetime were utilized to characterize the structure and luminescence properties of the obtained phosphors. The excitation spectrum indicated that these phosphors had a strong absorption band in near-ultraviolet (n-UV) region in the range from 250 to 450 nm. There were two sharp emission peaks in the visible region, which were located at 483 nm (blue) and 576 nm (yellow) corresponding to the magnetic dipole 4F9/2→6H15/2 transition and the electric dipole 4F9/2→6H13/2 transition of Dy3+, respectively. The commission International de I’Eclairage (CIE) of Sr3Sc0.93(PO4)3:0.07Dy3+ phosphor was calculated to be (0.28, 0.32), which was very close to the “ideal white” (x = 0.33, y = 0.33). Our results suggest that Sr3Sc(PO4)3:Dy3+ material can serve as a promising candidate for single component white-light-emitting phosphor under n-UV excitation.
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Acknowledgements
This work was supported by National Natural Science Foundation of China (Grant Nos. 21576002 and 61705003), and Scientific Research Common Program of Beijing Municipal Commission of Education (Grant No. SQKM201710011009).
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Du, J., Xu, D., Gao, X. et al. Synthesis and photoluminescence properties of a novel white-light-emitting Dy3+-activated Sr3Sc(PO4)3 phosphor. J Mater Sci: Mater Electron 29, 573–581 (2018). https://doi.org/10.1007/s10854-017-7949-4
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DOI: https://doi.org/10.1007/s10854-017-7949-4