Au-Based Transparent Conductors for Window Applications: Effect of Substrate Material

Abstract:

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Thin films of Au were made by sputter deposition onto glass substrates with and without transparent and electrically conducting layers of SnO2:In. The Au films were up to ~11 nm in thickness and covered the range for thin film growth from discrete islands, via large scale coalescence and formation of a meandering conducting network, to the formation of a more or less “holey” film. Scanning electron microscopy and atomic force microscopy showed that the SnO2:In films were considerably rougher than the glass itself. This roughness influenced the Au film formation so that large scale coalescence set in at a somewhat larger thickness for films on SnO2:In than on glass. Measurements of spectral optical transmittance and electrical resistance could be reconciled with impeded Au film formation on the SnO2:In layer, leading to pronounced “plateaus” in the near infrared optical properties for Au films on SnO2:In and an accompanying change from such two-layer films having a lower resistance than the single gold film at thicknesses below large scale coalescence to the opposite behavior for larger film thicknesses.

Info:

Periodical:

Edited by:

Pietro VINCENZINI, David S. GINLEY, Giovanni BRUNO, Attilio RIGAMONTI and Nikolay ZHELUDEV

Pages:

25-30

DOI:

10.4028/www.scientific.net/AST.75.25

Citation:

P. C. Lansåker et al., "Au-Based Transparent Conductors for Window Applications: Effect of Substrate Material", Advances in Science and Technology, Vol. 75, pp. 25-30, 2010

Online since:

October 2010

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$35.00

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