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Tunable luminescence properties of Ba2ScTaO6:Bi3+, Eu3+ phosphors

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Abstract

A series of Bi3+/Eu3+ single-doped and co-doped Ba2ScTaO6 phosphors was prepared by traditional high-temperature solid state reaction method. Their structure and photoluminescence properties of the samples were systematically studied by X-ray diffraction (XRD) analysis, scanning electron microscopy, excitation and emission spectra, and decay curves. The observation of XRD patterns shows that all samples are pure phases. Under the UV excitation, the emission color of Ba2ScTaO6:Bi3+, Eu3+ can be tuned by Bi3+/Eu3+ ratio change from amaranth to orange–red, which is realized by Bi3+–Eu3+ energy transfer. In addition, the energy transfer mechanism, luminescence decay curves and chromaticity coordinates are discussed in detail. The results show that Ba2ScTaO6:Bi3+, Eu3+ is a promising red phosphor for white light-emitting diodes.

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Acknowledgements

This work is supported by the National Natural Science Foundation of China (nos. 21576002 and 61705003) and Team Building Project of Beijing Technology and Business University (No. PXM2019_014213_000007).

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Authors and Affiliations

  1. School of Science, Beijing Technology and Business University, Beijing, 100048, People’s Republic of China

    Chao Wei, Denghui Xu, Yetong Jia, Xiong Li & Jiayue Sun

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  1. Chao Wei
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  2. Denghui Xu
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  3. Yetong Jia
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  5. Jiayue Sun
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Correspondence to Denghui Xu.

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Wei, C., Xu, D., Jia, Y. et al. Tunable luminescence properties of Ba2ScTaO6:Bi3+, Eu3+ phosphors. Appl. Phys. A 125, 706 (2019). https://doi.org/10.1007/s00339-019-2999-5

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