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Investigation of luminescence processes in Li6Gd(BO3)3:Eu3+ phosphor

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Abstract

Li6Gd(BO3)3 phosphor doped with varying concentrations of europium was synthesized using a solid-state reaction route. Powder X-ray diffraction, scanning electron microscopy and Fourier transform infrared spectroscopy methods were used to characterize the prepared phosphor. Photoluminescence excitation spectra of the Li6Gd(BO3)3:Eu3+ phosphors exhibited bands due to both Eu3+ and Gd3+ ions. Upon excitation of the host at 275 nm, the energy absorbed by Gd3+ ions can be transferred to Eu3+ ions in the Li6Gd(BO3)3 luminescent materials. The optimum concentration of Eu3+ ions for maximum luminescence yield was evaluated for the system. Color coordinates of prepared compound were calculated and plotted on the CIE diagram. The fluorescence lifetime of Eu3+ ions was found to be 2.12 ms. TL properties of the phosphor showed dominant peak at around 231 °C in addition to small shoulders at 131 and 367 °C. Various trap parameters and the kinetics for the glow peak were evaluated using the Chen’s peak shape method.

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Authors and Affiliations

  1. Department of Physics, R.T.M. Nagpur University, Nagpur, 440033, India

    Mrunal M. Yawalkar & S. J. Dhoble

  2. Department of Physics, J. N. Arts, Commerce and Science College, Wadi, Nagpur, 440023, India

    G. D. Zade

  3. Department of Chemical Engineering, Konkuk University, Seoul, 143701, South Korea

    Vijay Singh

Authors
  1. Mrunal M. Yawalkar
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  2. G. D. Zade
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  3. Vijay Singh
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  4. S. J. Dhoble
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Correspondence to Vijay Singh or S. J. Dhoble.

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Yawalkar, M.M., Zade, G.D., Singh, V. et al. Investigation of luminescence processes in Li6Gd(BO3)3:Eu3+ phosphor. J Mater Sci: Mater Electron 28, 180–189 (2017). https://doi.org/10.1007/s10854-016-5509-y

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