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The effect of rod orientation on electrical anisotropy in silver nanowire networks for ultra-transparent electrodes

Two-dimensional networks made of metal nanowires are excellent paradigms for the experimental observation of electrical percolation caused by continuous jackstraw-like physical pathways. Such systems became very interesting as alternative material in transparent electrodes, which are fundamental com...

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Detalles Bibliográficos
Autores principales: Ackermann, Thomas, Neuhaus, Raphael, Roth, Siegmar
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5039631/
https://www.ncbi.nlm.nih.gov/pubmed/27677947
http://dx.doi.org/10.1038/srep34289
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author Ackermann, Thomas
Neuhaus, Raphael
Roth, Siegmar
author_facet Ackermann, Thomas
Neuhaus, Raphael
Roth, Siegmar
author_sort Ackermann, Thomas
collection PubMed
description Two-dimensional networks made of metal nanowires are excellent paradigms for the experimental observation of electrical percolation caused by continuous jackstraw-like physical pathways. Such systems became very interesting as alternative material in transparent electrodes, which are fundamental components in display devices. This work presents the experimental characterization of low-haze and ultra-transparent electrodes based on silver nanowires. The films are created by dip-coating, a feasible and scalable liquid film coating technique. We have found dominant alignment of the silver nanowires in withdrawal direction. The impact of this structural anisotropy on electrical anisotropy becomes more pronounced for low area coverage. The rod alignment does not influence the technical usability of the films as significant electrical anisotropy occurs only at optical transmission higher than 99 %. For films with lower transmission, electrical anisotropy becomes negligible. In addition to the experimental work, we have carried out computational studies in order to explain our findings further and compare them to our experiments and previous literature. This paper presents the first experimental observation of electrical anisotropy in two-dimensional silver nanowire networks close at the percolation threshold.
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spelling pubmed-50396312016-09-30 The effect of rod orientation on electrical anisotropy in silver nanowire networks for ultra-transparent electrodes Ackermann, Thomas Neuhaus, Raphael Roth, Siegmar Sci Rep Article Two-dimensional networks made of metal nanowires are excellent paradigms for the experimental observation of electrical percolation caused by continuous jackstraw-like physical pathways. Such systems became very interesting as alternative material in transparent electrodes, which are fundamental components in display devices. This work presents the experimental characterization of low-haze and ultra-transparent electrodes based on silver nanowires. The films are created by dip-coating, a feasible and scalable liquid film coating technique. We have found dominant alignment of the silver nanowires in withdrawal direction. The impact of this structural anisotropy on electrical anisotropy becomes more pronounced for low area coverage. The rod alignment does not influence the technical usability of the films as significant electrical anisotropy occurs only at optical transmission higher than 99 %. For films with lower transmission, electrical anisotropy becomes negligible. In addition to the experimental work, we have carried out computational studies in order to explain our findings further and compare them to our experiments and previous literature. This paper presents the first experimental observation of electrical anisotropy in two-dimensional silver nanowire networks close at the percolation threshold. Nature Publishing Group 2016-09-28 /pmc/articles/PMC5039631/ /pubmed/27677947 http://dx.doi.org/10.1038/srep34289 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Ackermann, Thomas
Neuhaus, Raphael
Roth, Siegmar
The effect of rod orientation on electrical anisotropy in silver nanowire networks for ultra-transparent electrodes
title The effect of rod orientation on electrical anisotropy in silver nanowire networks for ultra-transparent electrodes
title_full The effect of rod orientation on electrical anisotropy in silver nanowire networks for ultra-transparent electrodes
title_fullStr The effect of rod orientation on electrical anisotropy in silver nanowire networks for ultra-transparent electrodes
title_full_unstemmed The effect of rod orientation on electrical anisotropy in silver nanowire networks for ultra-transparent electrodes
title_short The effect of rod orientation on electrical anisotropy in silver nanowire networks for ultra-transparent electrodes
title_sort effect of rod orientation on electrical anisotropy in silver nanowire networks for ultra-transparent electrodes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5039631/
https://www.ncbi.nlm.nih.gov/pubmed/27677947
http://dx.doi.org/10.1038/srep34289
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