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Electrochromism of amorphous WO3 films under the conditions of proton deficiency

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Abstract

In the paper, the dynamics of electrical coloring of amorphous WO3 films is studied in a planar system with aluminum electrodes. Photography and computer processing of images is used. Several types of heterogeneities are found in the distribution of the coloring centers: longitudinal and transverse failures in the colored phase (cracks), saw-tooth optical density waves. To explain these phenomena, a model was suggested based on the assumption that circulation of electric current appears in the regions with a highly heterogeneous coloring and the hence generated magnetic field stabilizes these heterogeneities.

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Authors and Affiliations

  1. Institute of Chemistry of Komi Scientific Center, Ural Division, Russian Academy of Sciences, Pervomaiskaya 48, Syktyvkar, 167982, Russia

    N. A. Sekushin

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  1. N. A. Sekushin
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Correspondence to N. A. Sekushin.

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Original Russian Text © N.A. Sekushin, 2009, published in Elektrokhimiya, 2009, Vol. 45, No. 12, pp. 1448–1453.

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Sekushin, N.A. Electrochromism of amorphous WO3 films under the conditions of proton deficiency. Russ J Electrochem 45, 1340–1345 (2009). https://doi.org/10.1134/S1023193509120040

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  • DOI: https://doi.org/10.1134/S1023193509120040

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