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Gadolinium-Activated CaZr4O9 Ultraviolet-B-Emitting Phosphor: A Luminescence and EPR Study

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Abstract

Gadolinium-activated CaZr4O9 ultraviolet-B-emitting phosphor has been prepared by a solution combustion method and characterized using powder x-ray diffraction analysis, electron paramagnetic resonance (EPR), and photoluminescence (PL) spectroscopic techniques. Upon excitation at 274 nm, the emission spectrum exhibits a well-defined ultraviolet B emission band with maximum at 313 nm, corresponding to 6P7/2 → 8S7/2 transition. A characteristic “U”-type EPR spectrum is observed for the powder samples. Doped Gd3+ ion appears to occupy calcium sites in the phosphor lattice. EPR and PL analyses of the sample confirm presence of Gd3+ in the CaZr4O9 host.

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Acknowledgements

V.S. expresses his thanks to Prof. Hwang-Sun Kang, Department of Public Administration, Konkuk University, Seoul, for his encouragement.

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Authors and Affiliations

  1. Department of Chemical Engineering, Konkuk University, Seoul, 143-701, Korea

    Vijay Singh, N. Singh & M. S. Pathak

  2. Institute of Physics, University of São Paulo, São Paulo, SP, 05508-090, Brazil

    S. Watanabe & T. K. Gundu Rao

  3. Division of Electronics Engineering, Chonbuk National University, Jeonju, Jeonbuk, 561-756, Korea

    A. K. Srivastava

  4. Materials Research Laboratory, Sharda University, Greater Noida, 201-310, India

    P. K. Singh

  5. Department of Physics, RTM Nagpur University, Nagpur, 440-033, India

    S. J. Dhoble

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  1. Vijay Singh
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Correspondence to Vijay Singh.

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Singh, V., Singh, N., Watanabe, S. et al. Gadolinium-Activated CaZr4O9 Ultraviolet-B-Emitting Phosphor: A Luminescence and EPR Study. J. Electron. Mater. 46, 1943–1947 (2017). https://doi.org/10.1007/s11664-017-5329-8

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  • DOI: https://doi.org/10.1007/s11664-017-5329-8

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