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Photoluminescence properties of core-shell SiO2/Lu2O3: Eu monodisperse heteronanoparticles

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Abstract

Core-shell monodisperse heteroparticles of the composition SiO2/Lu1.86Eu0.14O3 have been synthesized using the developed technique for preparing spherical colloidal silicon dioxide particles with the size dispersion in the range 2.0–2.5% and the procedure for producing nanocoatings on the surface of spheres by codeposition. The structure of heteroparticles has been investigated, their excitation and photoluminescence spectra have been analyzed, and the lifetime of the 5 D 0 excited state of Eu3+ ions has been examined. It has been revealed that the luminescence decay time for heteroparticles increases by a factor of approximately two compared to that for a powdered luminophor Lu2O3: Eu (7 at %) prepared and treated under the same temperature conditions as the SiO2/Lu2O3: Eu (7 at %) heteroparticles. This effect has been attributed to the change in the effective refractive index and the local density of photon states in luminophor nanolayers of heteroparticles.

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Author notes

  1. A. N. Gruzintsev

    Present address: Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, ul. Institutskaya 6, Chernogolovka, Moscow oblast, 142432, Russia

Authors and Affiliations

  1. Institute of Solid State Physics, Russian Academy of Sciences, ul. Institutskaya 2, Chernogolovka, Moscow oblast, 142432, Russia

    G. A. Emel’chenko, V. M. Masalov & I. I. Zver’kova

  2. State Scientific Institution “Institute for Single Crystals,”, National Academy of Sciences of Ukraine, pr. Lenina 60, Kharkov, 61178, Ukraine

    Yu. V. Yermolayeva & A. V. Tolmachev

  3. Institut des NanoSciences de Paris, Unite Mixte de Recherche (UMR 7588) du CNRS de l’Universit Pierre et Marie Curie-Paris 6, 140 rue de Lourmel, Paris, 75015, France

    P. Benalloul & C. Barthou

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  1. A. N. Gruzintsev
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  2. G. A. Emel’chenko
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  3. Yu. V. Yermolayeva
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  4. V. M. Masalov
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  5. I. I. Zver’kova
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  6. A. V. Tolmachev
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  7. P. Benalloul
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  8. C. Barthou
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Additional information

Original Russian Text © A.N. Gruzintsev, G.A. Emel’chenko, Yu.V. Yermolayeva, V.M. Masalov, I.I. Zver’kova, A.V. Tolmachev, P. Benalloul, C. Barthou, 2010, published in Fizika Tverdogo Tela, 2010, Vol. 52, No. 11, pp. 2232–2237.

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Gruzintsev, A.N., Emel’chenko, G.A., Yermolayeva, Y.V. et al. Photoluminescence properties of core-shell SiO2/Lu2O3: Eu monodisperse heteronanoparticles. Phys. Solid State 52, 2385–2391 (2010). https://doi.org/10.1134/S1063783410110260

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