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Effect of dopant concentration on the phase composition and luminescence properties of Eu2+- and Ce3+-doped AlONs

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Abstract

Herein we report the synthesis of aluminum oxynitride (Al5O6N) doped with Eu2+ and Ce3+ and examine the effects of the dopant concentration and the nature of the rare-earth-containing precursor (europium and cerium oxides, Eu(acac)3, and Ce(acac)3) on its properties. At dopant concentrations above the solubility limit of rare-earth aluminates (EuAl12O19 and CeAl11O18) in aluminum oxynitride, we observed the formation of aluminum nitride and aluminum oxide (α-Al2O3) as individual phases. The concentration of the latter phase was higher when the rare-earth oxides were used. The emission intensity in the cathodoluminescence spectra of the samples was shown to have a maximum at Eu2+ and Ce3+ concentrations from 0.1 to 0.5 at %. Concentration quenching of luminescence was observed.

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Authors and Affiliations

  1. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskii pr. 49, Moscow, 119991, Russia

    N. S. Akhmadullina, A. S. Lysenkov, A. A. Ashmarin & Yu. F. Kargin

  2. Yeltsin Federal University, ul. Mira 19, Yekaterinburg, 620002, Russia

    A. V. Ishchenko, V. V. Yagodin & B. V. Shul’gin

Authors
  1. N. S. Akhmadullina
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  2. A. S. Lysenkov
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  3. A. A. Ashmarin
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  4. Yu. F. Kargin
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  5. A. V. Ishchenko
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  6. V. V. Yagodin
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  7. B. V. Shul’gin
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Correspondence to N. S. Akhmadullina.

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Original Russian Text © N.S. Akhmadullina, A.S. Lysenkov, A.A. Ashmarin, Yu.F. Kargin, A.V. Ishchenko, V.V. Yagodin, B.V. Shul’gin, 2015, published in Neorganicheskie Materialy, 2015, Vol. 51, No. 5, pp. 529–537.

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Akhmadullina, N.S., Lysenkov, A.S., Ashmarin, A.A. et al. Effect of dopant concentration on the phase composition and luminescence properties of Eu2+- and Ce3+-doped AlONs. Inorg Mater 51, 473–481 (2015). https://doi.org/10.1134/S0020168515050015

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  • DOI: https://doi.org/10.1134/S0020168515050015

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