Synthesis and characterisation of optically tuneable, magnetic phosphors
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Balakrishnan, S.
Launikonis, A.
Osvath, P.
Swiegers, G. F.
Douvalis, A. P.
Wilson, G. J.
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peer reviewed
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Materials Chemistry and Physics
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YVO(4):Eu(3+) phosphor particles have been encapsulated with silica using core-shell technology to produce particles of 400-600 nm in size. The surface of the outer silica shell was further functionalised by the introduction of iron oxide nanoparticles, thus producing a material possessing both magnetic and luminescent properties. The YVO(4):Eu(3+)@SiO(2)-magnetite composite material was characterised by X-ray diffraction (XRD), Raman and Fourier transform IR spectroscopy, scanning electron microscopy and emission spectroscopy. Characterisation of the outer iron oxide coating with (57)Fe Mossbauer spectroscopy, magnetization measurements and scanning electron microscopy reveals the presence of non-stoichiometric maghemite and magnetite nanoparticles of sizes less than similar to 20 nm. (C) 2009 Elsevier B.V. All rights reserved.
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phosphors, magnetite, composites, luminescence spectroscopy, up-conversion fluorescence, colloidal yvo4-eu, single-crystals, energy-transfer, silica spheres, nanoparticles, luminescence, mossbauer, nanocrystals, growth
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<Go to ISI>://000276984600072
http://ac.els-cdn.com/S0254058409007603/1-s2.0-S0254058409007603-main.pdf?_tid=da3e3dad9dae5e2b0b41738773010b63&acdnat=1334219308_e04d9b53544d78f2de8fb63a6ee72c73
http://ac.els-cdn.com/S0254058409007603/1-s2.0-S0254058409007603-main.pdf?_tid=da3e3dad9dae5e2b0b41738773010b63&acdnat=1334219308_e04d9b53544d78f2de8fb63a6ee72c73
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en
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Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών