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Enhanced piezoelectricity and photoluminescence in Dy-modified 0.94(Bi1−x Dy x )0.5Na0.5TiO3–0.06BaTiO3 lead-free multifunctional ceramics

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Abstract

Lead-free 0.94(Bi1−x Dy x )0.5Na0.5TiO3–0.06BaTiO3 ceramics were prepared by an ordinary sintering method and their piezoelectric and photoluminescent properties were studied. All the ceramics possess a pure perovskite structure with the coexistence of the rhombohedral and tetragonal phase. The partial substitution of Dy3+ for Bi3+ enhanced effectively the piezoelectricity of the materials. The optimum piezoelectricity is obtained at x = 0.025, giving d 33 = 190 pC/N and k P = 37.2 %, respectively. After the addition of Dy3+, excellent photoluminescence of the ceramics is induced. The Dy-doped ceramics exhibit strong emissions at ~478 nm (blue) and ~575 nm (yellow), corresponding to 4F9/2 → 6H15/2 and 4F9/2 → 6H13/2 of Dy3+ transitions, respectively. The optimum photoluminescence of the ceramics is reached at x = 0.025. The ceramics with the doping of 2.5 mol% Dy3+ exhibit simultaneously good piezoelectricity, strong ferroelectricity and excellent photoluminescence, suggesting a promising application in the electro-optic devices.

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Acknowledgments

This work was supported by the projects of Education Department of Sichuan Province (15ZA0037 and 15ZB0032) and Science and Technology Bureau of Sichuan Province (2014JY0040).

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Authors and Affiliations

  1. College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 10066, China

    Na Jiang, Lingling Luo, Fengying Lei, Qiaoji Zheng, Chenggang Xu, Jie Liao & Dunmin Lin

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  1. Na Jiang
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  2. Lingling Luo
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  3. Fengying Lei
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  4. Qiaoji Zheng
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  5. Chenggang Xu
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  6. Jie Liao
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  7. Dunmin Lin
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Correspondence to Dunmin Lin.

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Jiang, N., Luo, L., Lei, F. et al. Enhanced piezoelectricity and photoluminescence in Dy-modified 0.94(Bi1−x Dy x )0.5Na0.5TiO3–0.06BaTiO3 lead-free multifunctional ceramics. J Mater Sci: Mater Electron 26, 4981–4987 (2015). https://doi.org/10.1007/s10854-015-3010-7

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  • DOI: https://doi.org/10.1007/s10854-015-3010-7

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