This article is cited in 5 papers

Optical properties

Optical properties of spherical monodisperse Y$_2$O$_3$–ZnO nanoparticles

A. N. Gruzintsev^a, N. A. Dulina^b, G. A. Emel'chenko^c, Yu. V. Ermolaeva^b, E. A. Kudrenko^c, A. V. Tolmachev<sup>b

a</sup> Institute of Microelectronics Technology and High-Purity Materials RAS
^b Institute for Single Crystals, National Academy of Sciences of Ukraine, Kharkov
^c Osipyan Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region

Abstract: Based on the developed technique for synthesizing spherical mesoporous particles of yttrium oxide with a size dispersion of 10–15% and methods for infiltrating active components into them, spherical nanocrystalline particles of composition Y$_2$O$_3$–ZnO have been synthesized. The nanocomposite structure has been studied, and the spectra of diffuse reflection and photoluminescence of heteroparticles, as well as the stimulated emission spectra of zinc oxide excitons, have been analyzed after annealing at various temperatures. The formation of ZnO nanocrystals in Y$_2$O$_3$ sphere pores is observed during material synthesis with a single infiltration procedure. The lasing is associated with a change in the effective refractive index and local photon density of states in phosphor nanoparticles, i.e., spherical optical cavities.

Received: 04.04.2012

 English version: Physics of the Solid State, 2012, 54:11, 2260–2265

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