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Correction of the band gap of Y2O3:Eu3+ phosphor

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Abstract

Submicron samples of Y2O3:Eu3+ phosphor with elevated photoluminescence (PL) efficiency and activator concentration of 9 at % obtained by the sol–gel method were investigated by diffuse reflection spectroscopy and PL spectroscopy. It is found that the diffuse reflection spectrum in the vicinity of the fundamental absorption edge (<300 nm) is distorted by the superposition of the PL of Eu3+ ions, as a result of which the calculated value of optical band gap E g of the Y2O3 matrix is overestimated. An algorithm for eliminating the PL influence on the absorption edge is proposed, and the correct E g values are found to be 4.61 ± 0.12 and 4.50 ± 0.12 eV for annealing at 700 and 1300°C, respectively.

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Authors and Affiliations

  1. Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia

    V. V. Bakovets, I. V. Yushina, O. V. Antonova & T. A. Pomelova

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  1. V. V. Bakovets
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  2. I. V. Yushina
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  3. O. V. Antonova
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  4. T. A. Pomelova
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Corresponding author

Correspondence to V. V. Bakovets.

Additional information

Original Russian Text © V.V. Bakovets, I.V. Yushina, O.V. Antonova, T.A. Pomelova, 2016, published in Optika i Spektroskopiya, 2016, Vol. 121, No. 6, pp. 929–933.

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Bakovets, V.V., Yushina, I.V., Antonova, O.V. et al. Correction of the band gap of Y2O3:Eu3+ phosphor. Opt. Spectrosc. 121, 862–866 (2016). https://doi.org/10.1134/S0030400X16120067

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  • DOI: https://doi.org/10.1134/S0030400X16120067

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