Yu. V. Ermolaeva, V. M. Masalov, A. N. Gruzintsev, E. E. Yakimov, I. I. Zver'kova, C. Barthou, A. V. Tolmachev, G. A. Emel'chenko, “Synthesis and features of the structure and luminescence of monodisperse SiO$_2$/(Lu$_{1-x}$Eu$_x$)$_2$O$_3$ ($x$ = 0.07) core-shell heteroparticles”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 2010, Volume 36, Issue 15,Pages 94

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Synthesis and features of the structure and luminescence of monodisperse SiO$_2$/(Lu$_{1-x}$Eu$_x$)$_2$O$_3$ ($x$ = 0.07) core-shell heteroparticles

Yu. V. Ermolaeva^a, V. M. Masalov^b, A. N. Gruzintsev^c, E. E. Yakimov^c, I. I. Zver'kova^b, C. Barthou^d, A. V. Tolmachev^a, G. A. Emel'chenko^b

^a Institute for Single Crystals, National Academy of Sciences of Ukraine, Kharkov
^b Osipyan Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region
^c Institute of Microelectronics Technology and High-Purity Materials RAS
^d Institut des NanoSciences de Paris, UPMC Univ Paris 06, CNRS, UMR 7588, France

Abstract: Monodisperse iO$_2$/Lu$_{1.86}$Eu$_{0.14}$O$_3$ core-shell heteroparticles have been obtained using a method developed previously for the synthesis of spherical colloidal particles of silicon dioxide with a size spread of 2–2.5%, followed by the coprecipitation of europium-doped lutetium oxide nanocoating on these spheres. The structure of heteroparticles was studied and their photo- and cathodoluminescence spectra were analyzed. The luminescence decay time in heteroparticles is almost twice that in Lu$_{1.86}$Eu$_{0.14}$O$_3$ phosphor powder prepared and treated under the same thermal conditions.

Received: 11.03.2010