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Characterization and Luminescence Properties of Color-Tunable Dy3+-Doped BaY2ZnO5 Nanophosphors

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Abstract

Dy3+-doped BaY2ZnO5 nanophosphors were successfully synthesized by use of a solution combustion process. The effects of sintering temperature and dysprosium concentration on the structural and luminescence characteristics of the phosphors were investigated. X-ray diffraction (XRD) analysis confirmed the formation of pure orthorhombic BaY2ZnO5 with the space group Pbnm at 1100°C. Morphological investigation revealed spherical nanoparticles with smooth surfaces. The luminescence features of the nanophosphor were studied by use of photoluminescence excitation (PLE) and photoluminescence emission (PL), with luminescence decay curves and color (x, y) coordinates. On excitation at 355 nm, BaY2ZnO5 nanophosphor doped with trivalent dysprosium ion emits white light as a mixture of blue (4F9/2 → 6H15/2) and yellow (4F9/2 → 6H13/2) emission. Concentration quenching is explained on the basis of cross-relaxation between intermediate Dy3+ states. Thus, BaY2ZnO5:Dy3+ nanophosphor may be suitable for producing efficient white light for ultraviolet-light-emitting diodes (UV-LEDs), fluorescent lamps, and a variety of optical display panels.

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Acknowledgements

One of the authors, Ms. Sonika, gratefully acknowledges financial support in the form of JRF (UGC) New Delhi, India.

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Authors and Affiliations

  1. Department of Chemistry, Maharshi Dayanand University, Rohtak, 124001, India

    Sonika, S.P. Khatkar & V.B. Taxak

  2. U.I.E.T, Maharshi Dayanand University, Rohtak, 124001, India

    Avni Khatkar & Rajesh Kumar

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  1. Sonika
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  2. S.P. Khatkar
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  3. Avni Khatkar
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  4. Rajesh Kumar
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  5. V.B. Taxak
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Correspondence to V.B. Taxak.

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Sonika, Khatkar, S., Khatkar, A. et al. Characterization and Luminescence Properties of Color-Tunable Dy3+-Doped BaY2ZnO5 Nanophosphors. J. Electron. Mater. 44, 542–548 (2015). https://doi.org/10.1007/s11664-014-3465-y

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