Abstract
The structure of opal-ZnO composites is studied by transmission electron microscopy and X-ray phase analysis. It is shown that, under thermal treatment of infiltrated samples, a solid-phase reaction proceeds at the opal-ZnO interface. As a result, zinc silicate β-Zn2SiO4 and its high-temperature phase, willemite Zn2SiO4, are formed. The structure and emission properties of the nanocomposite are studied in relation to the degree of filling. For a sample subjected to 25 cycles of filling, luminescence controlled by the β-Zn2SiO4 phase is detected in the blue spectral region (at 430 nm). The angular dependences of the luminescence and reflection spectra of an opal-ZnO composite sample subjected to four cycles of filling show the effect of suppression of a spontaneous emission of zinc oxide in the photonic band gap.
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Translated from Fizika i Tekhnika Poluprovodnikov, Vol. 39, No. 11, 2005, pp. 1375–1379.
Original Russian Text Copyright © 2005 by Emel’chenko, Gruzintsev, Koval’chuk, Masalov, Samarov, Yakimov, Barthou, Zver’kova.
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Emel’chenko, G.A., Gruzintsev, A.N., Koval’chuk, M.N. et al. Opal-ZnO nanocomposites: Structure and emission properties. Semiconductors 39, 1328–1332 (2005). https://doi.org/10.1134/1.2128460
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DOI: https://doi.org/10.1134/1.2128460