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Optimization of luminescence properties of Tb3+-doped α-Sr2P2O7 phosphor synthesized by combustion method

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Abstract

In this paper, thermoluminescence (TL) properties of rare earth Tb3+-doped α-Sr2P2O7 were examined after β-irradiation and photoluminescence (PL) properties of samples were examined for proper excitation. All the samples were synthesized by high-temperature combustion method. The X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy characterization confirms the formation of pure α-phase with crystallized in orthorhombic structure of samples. The PL emission spectra of all samples exhibit characteristic green emission peaks of Tb3+ where the peak at 545 nm has the highest emission intensity for Tb3+ concentration of 5.0 mol%. The TL glow curves of β-irradiated Tb3+-doped α-Sr2P2O7 phosphors were recorded at different heating rates of 2, 4, and 6 K·s−1. TL curves of all sample exhibit combination of two peaks: peak at 420 K shifts toward higher temperature, while peak at 525 K remains unaffected with the increase in Tb3+ concentration as well as fading effect. The activation energy and kinetic parameters of the samples were evaluated using thermoluminescence peak shape method.

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Authors and Affiliations

  1. Luminescence Material Laboratory, Department of Physics, Faculty of Science, The M. S. University of Baroda, Vadodara, 390002, India

    Nimesh Prafulbhai Patel, Mangalampalli Srinivas, Dhaval Modi & Vishwnath Verma

  2. Display Materials Laboratory, Applied Physics Department, Faculty of Technology and Engineering, The M. S. University of Baroda, Vadodara, 390001, India

    Kota Venkata Ramana Murthy

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  1. Nimesh Prafulbhai Patel
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  2. Mangalampalli Srinivas
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  3. Dhaval Modi
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  4. Vishwnath Verma
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  5. Kota Venkata Ramana Murthy
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Correspondence to Nimesh Prafulbhai Patel.

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Patel, N.P., Srinivas, M., Modi, D. et al. Optimization of luminescence properties of Tb3+-doped α-Sr2P2O7 phosphor synthesized by combustion method. Rare Met. 37, 587–593 (2018). https://doi.org/10.1007/s12598-015-0688-x

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  • DOI: https://doi.org/10.1007/s12598-015-0688-x

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