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Transparent fused nanowire electrodes by condensation coefficient modulation

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Lee, Jaemin, Varagnolo, Silvia, Walker, Marc and Hatton, Ross A. (2020) Transparent fused nanowire electrodes by condensation coefficient modulation. Advanced Functional Materials . doi:10.1002/adfm.202005959

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Official URL: https://doi.org/10.1002/adfm.202005959

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Abstract

Silver nanowire networks can offer exceptionally high performance as transparent electrodes for stretchable sensors, flexible optoelectronics, and energy harvesting devices. However, this type of electrode suffers from the triple drawbacks of complexity of fabrication, instability of the nanowire junctions, and high surface roughness, which limit electrode performance and utility. Here, a new concept in the fabrication of silver nanowire electrodes is reported that simultaneously addresses all three of these drawbacks, based on an electrospun nanofiber network and supporting substrate having silver vapor condensation coefficients of one and near‐zero, respectively. Consequently, when the whole substrate is exposed to silver vapor by simple thermal evaporation, metal selectively deposits onto the nanofiber network. The advantage of this approach is the simplicity, since there is no mask, chemical or dry metal etching step, or mesh transfer step. Additionally, the contact resistance between nanowires is zero and the surface roughness is sufficiently low for integration into organic photovoltaic devices. This new concept opens the door to continuous roll‐to‐roll fabrication of high‐performance fused silver nanowire electrodes for myriad potential applications.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science > Chemistry
Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): Nanowires, Nanofibers, Electrodes, Condensation, Silver
Journal or Publication Title: Advanced Functional Materials
Publisher: Wiley
ISSN: 1616-301X
Official Date: 18 September 2020
Dates:
DateEvent
18 September 2020Available
28 August 2020Accepted
Date of first compliant deposit: 24 September 2020
DOI: 10.1002/adfm.202005959
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
Copyright Holders: © 2020 The Authors
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
EP/N009096/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
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