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3 June 2005 Opal-ZnO nanocomposites: structure and emission properties
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The structure of the opal-ZnO composites has been studied by TEM and X-ray methods. It was found that the solid state reaction of the opal-ZnO interface interaction is occurring during the heat treatment of the infiltrated samples resulting in the formation of the zinc silicate β-Zn2SiO4 and its high temperature modification of willemite Zn2SiO4. Nanocomposite structure and emission properties have been studied in dependence on the filling degree. The blue luminescence at 430 nm stipulated for the β-Zn2SiO4 phase has been observed for the sample with 25 filling cycles. Angular dependences of the PL and Reflection spectra of the opal-ZnO composite with 4 filling cycles demonstrate the suppression effect of the ZnO spontaneous emission in the stop band.
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Gennadi A. Emelchenko, Alexander N. Gruzintsev, Marina N. Kovalchuk, Vladimir M. Masalov, Eduard N. Samarov, Eugeny E. Yakimov, Carlos Barthou, and Irina I. Zverkova "Opal-ZnO nanocomposites: structure and emission properties", Proc. SPIE 5825, Opto-Ireland 2005: Optoelectronics, Photonic Devices, and Optical Networks, (3 June 2005);

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