High performing AgNW transparent conducting electrodes with a sheet resistance of 2.5 Ω Sq−1 based upon a roll-to-roll compatible post-processing technique

Kumar, D., Stoichkov, V., Brousseau, E., Smith, G. C. and Kettle, J. (2019) High performing AgNW transparent conducting electrodes with a sheet resistance of 2.5 Ω Sq−1 based upon a roll-to-roll compatible post-processing technique. Nanoscale, 11(12), pp. 5760-5769. (doi: 10.1039/C8NR07974A) (PMID:30775736)

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Abstract

A report of transparent and conducting silver nanowires (AgNWs) that produce remarkable electrical performance, surface planarity and environmental stability is given. This research presents an innovative process that relies on three sequential steps, which are roll-to-roll (R2R) compatible: thermal embossing, infrared sintering and plasma treatment. This process leads to the demonstration of a conductive film with a sheet resistance of 2.5 Ω sq−1 and high transmittance, thus demonstrating the highest reported figure-of-merit in AgNWs to date (FoM = 933). A further benefit of the process is that the surface roughness is substantially reduced compared to traditional AgNW processing techniques. The consideration of the long-term stability is given by developing an accelerated life test process that simultaneously stresses the applied bias and temperature. Regression line fitting shows that a ∼150-times improvement in stability is achieved under ‘normal operational conditions’ when compared to traditionally deposited AgNW films. X-ray photoelectron spectroscopy (XPS) is used to understand the root cause of the improvement in long-term stability, which is related to reduced chemical changes in the AgNWs.

Item Type:Articles
Additional Information:This work was supported by the UK Engineering and Physical Sciences Research Council through the EPSRC Centre for Innovative Manufacturing in Large Area Electronics (grant number EP/K03099X/1). The work was also supported by the Solar Photovoltaic Academic Research Consortium II (SPARC II) project, gratefully funded by WEFO.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Kettle, Dr Jeff
Authors: Kumar, D., Stoichkov, V., Brousseau, E., Smith, G. C., and Kettle, J.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Nanoscale
Publisher:Royal Society of Chemistry
ISSN:2040-3364
ISSN (Online):2040-3372
Published Online:12 February 2019
Copyright Holders:This journal is © The Royal Society of Chemistry 2019
First Published:First published in Nanoscale 11:5760-5769
Publisher Policy:Reproduced under a Creative Commons licence

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