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Efficient energy transfer and luminescence properties of green–blue emission in Ce/Tb Co-doped Sr3NaY(PO4)3F phosphors

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Abstract

Ce3+ and Ce3+/Tb3+-activated Sr3NaY(PO4)3F phosphors are synthesized by the high temperature solid-state reaction, which can be efficiently excited by near ultraviolet (NUV) light-emitting diode (LED) chips. The X-ray diffraction profiles (XRD), photoluminescence(PL) spectra, the decay curves, thermal properties and energy transfer of the phosphors were systematically investigated in detail. The PL spectrum of Sr3NaY(PO4)3F:Ce3+/Tb3+ shows a broad hump ranging from 300 to 450 nm of Ce3+ ions and characteristic line of Tb3+ ions. The emission intensity of Tb3+ increased and that of Ce3+ decreased with the increase of content of Tb3+. The color of the Sr3NaY(PO4)3F:Ce3+/Tb3+ phosphors can shift from blue to green by varying Tb3+ content. The decay curves of Sr3NaY(PO4)3F:Ce3+/Tb3+ indicated that energy transfer process from Ce3+ to Tb3+ existed in the host and the quadrupole–quadrupole interaction to be demonstrated for energy transfer mechanism. In addition, the Sr3NaY(PO4)3F:Ce3+/Tb3+ phosphor exhibits excellent thermal stability, 90% initial emission intensity still remained at temperatures over 100 °C. The obtained results reveal that Sr3NaY(PO4)3F:Ce3+/Tb3+ phosphors can be served as a green-emitting candidate material for phosphor-converted white-light NUV-LEDs.

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Acknowledgements

This work was supported by Scientific Research Ability Promotion Plan of Graduate Student of Beijing Technology and Business University; Importation and Development of High-Caliber Talents Project of Beijing Municipal Institutions(CIT&TCD201404030); National Natural Science Foundation of China (Grant Nos. 21576002, 61705003), and Scientific Research Common Program of Beijing Municipal Commission of Education (Grant No. SQKM201710011009).

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Authors and Affiliations

  1. School of Science, Beijing Technology and Business University, Beijing, 100048, China

    Jinling Li, Denghui Xu, Chao Wei, Jiangnan Du, Xuedong Gao, Xiong Li & Jiayue Sun

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  1. Jinling Li
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  2. Denghui Xu
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  3. Chao Wei
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  4. Jiangnan Du
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Correspondence to Denghui Xu.

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Li, J., Xu, D., Wei, C. et al. Efficient energy transfer and luminescence properties of green–blue emission in Ce/Tb Co-doped Sr3NaY(PO4)3F phosphors. J Mater Sci: Mater Electron 29, 13302–13309 (2018). https://doi.org/10.1007/s10854-018-9454-9

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