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Thermoluminescence and lyoluminescence in γ-ray irradiated and Ce3+-doped YCa4O(BO3)3 phosphors

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Abstract

YCa4O(BO3)3 crystal having various concentration of Ce ions were synthesized by solid-state diffusion technique. XRD pattern of the sample confirmed the formation of the sample. Thermoluminescence (TL) and lyoluminescence (LL) of the γ-ray-irradiated sample were recorded. Two distinct peaks around 160 and 277 °C were observed in TL glow curves. TL intensity increased with increasing dopant concentration up to 2 mol%. A single sharp peak was observed in the LL glow curve of the sample. It was found that both TL and LL increased almost linearly with γ-ray doses up to 1.5 kGy. Photoluminescence (PL) of the sample was recorded to find the role of rare earth ion doped in YCa4O(BO3)3. PL emission spectrum showed two peaks lying very close to each other around 390 nm which are characteristics of 5d → 4f transition of Ce3+ ions. When LL of samples was recorded after removing the TL peaks it did not show any emission. This indicates that emission centres responsible for TL are also responsible for LL.

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Authors and Affiliations

  1. Department of Applied Physics, O. P. Jindal Institute of Technology, Raigarh, 496001, India

    G. C. Mishra & A. K. Upadhyay

  2. Department of Physics, E. R. R. Government P. G. Science College, Bilaspur, 495001, India

    R. S. Kher

  3. Department of Physics, R. T. M. Nagpur University, Nagpur, 443300, India

    S. J. Dhoble

Authors
  1. G. C. Mishra
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  2. A. K. Upadhyay
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  3. R. S. Kher
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  4. S. J. Dhoble
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Corresponding author

Correspondence to S. J. Dhoble.

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Mishra, G.C., Upadhyay, A.K., Kher, R.S. et al. Thermoluminescence and lyoluminescence in γ-ray irradiated and Ce3+-doped YCa4O(BO3)3 phosphors. J Mater Sci 46, 7275–7278 (2011). https://doi.org/10.1007/s10853-011-5687-1

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  • DOI: https://doi.org/10.1007/s10853-011-5687-1

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