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Issue 42, 2019
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Versatility of bilayer metal oxide coatings on silver nanowire networks for enhanced stability with minimal transparency loss

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Abstract

Silver nanowire (AgNW) networks have been lately much investigated thanks to their physical properties and are therefore foreseen to play a key role in many industrial devices as transparent electrodes, but their stability can be an issue. Although it has been shown that thin metal oxide coatings enhance the stability of AgNW networks, such stabilization is achieved at the expense of transparency. We demonstrate that by depositing a second oxide coating, which acts as an antireflective layer, it is possible to obtain highly stable and transparent composite electrodes. AgNW networks were deposited by the airbrush method, and zinc oxide (ZnO) and aluminum oxide (Al2O3) coatings were deposited, by Atmospheric Pressure Spatial Atomic Layer Deposition (AP-SALD), using both glass and plastic substrates; therefore, the proposed fabrication method is low-cost and compatible with high-throughput scalable fabrication. The mechanical stability of bare, ZnO and ZnO/Al2O3-coated AgNWs upon bending is also presented. The obtained nanocomposites exhibit highly homogeneous and conformal oxide coatings with average thicknesses of a few tens of nanometers. Samples with bilayer coatings of 70 nm ZnO/70 nm Al2O3 still exhibit very good stability after annealing in air up to 450 °C for 6 repetitive cycles.

Graphical abstract: Versatility of bilayer metal oxide coatings on silver nanowire networks for enhanced stability with minimal transparency loss

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Publication details

The article was received on 04 Jul 2019, accepted on 19 Sep 2019 and first published on 11 Oct 2019


Article type: Paper
DOI: 10.1039/C9NR05658K
Nanoscale, 2019,11, 19969-19979

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    Versatility of bilayer metal oxide coatings on silver nanowire networks for enhanced stability with minimal transparency loss

    S. Aghazadehchors, V. H. Nguyen, D. Muñoz-Rojas, C. Jiménez, L. Rapenne, N. D. Nguyen and D. Bellet, Nanoscale, 2019, 11, 19969
    DOI: 10.1039/C9NR05658K

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