Preparation, morphology, and luminescent properties of europium-doped nanodispersed scandium sesquioxide |
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| Authors: | I V Baklanova V N Krasil’nikov L A Perelyaeva O I Gyrdasova |
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| Institution: | 1. Institute of Solid-State Chemistry, Ural Branch, Russian Academy of Sciences, ul. Pervomaiskaya 91, Yekaterinburg, 620990, Russia
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| Abstract: | Scandium sesquioxide-based solid solutions of composition Sc2 ? 2x Eu2x O3 (0.005 ?? x ?? 0.05) were prepared by thermolysis of Sc1 ? x Eu x (CH3COO)3 and by reacting mixtures of scandium and europium nitrates with ethylene glycol. Thermal decomposition of Sc1 ? x Eu x (CH3COO)3 was found to yield Sc2 ? 2x Eu2x O3 with the shapes of aggregates atypical of the cubic structure of this oxide, and the reaction products of scandium and europium nitrates were found to have a loose spongelike structure. A spectroscopic study showed that Sc2 ? 2x Eu2x O3 and Sc1 ? x Eu x (CH3COO)3 are potential luminescent materials active in the visible spectral region. The tervalent europium in the Sc2 ? 2x Eu2x O3 structure is the source of strong red emission (5 D 0 ?? 7 F 2) and can be used in fluorescent lamps, colored lightning, and optoelectronic devices. |
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