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Insulator-conductor type transitions in graphene-modified silver nanowire networks: a route to inexpensive transparent conductors

journal contribution
posted on 2023-06-09, 11:42 authored by Izabela Jurewicz, Azin Fahimi, Phillip E Lyons, Ronan J Smith, Maria Cann, Matthew LargeMatthew Large, Mingwen Tian, Jonathan N Coleman, Alan DaltonAlan Dalton
Silver nanowire coatings are an attractive alternative to indium tin oxide for producing transparent conductors. To fabricate coatings with low sheet resistance required for touchscreen displays, a multi-layer network of silver nanowires must be produced that may not be cost effective. This problem is counteracted here by modifying the electrical properties of an ultra low-density nanowire network through local deposition of conducting graphene platelets. Unlike other solution-processed materials, such as graphene oxide, our pristine graphene is free of oxygen functional groups, resulting in it being electrically conducting without the need for further chemical treatment. Graphene adsorption at interwire junctions as well as graphene connecting adjacent wires contributes to a marked enhancement in electrical properties. Using our approach, the amount of nanowires needed to produce viable transparent electrodes could be more than 50 times less than the equivalent pristine high density nanowire networks, thus having major commercial implications. Using a laser ablation process, it is shown that the resulting fi lms can be patterned into individual electrode structures, which is a pre-requisite to touchscreen sensor fabrication.

History

Publication status

  • Published

File Version

  • Published version

Journal

Advanced Functional Materials

ISSN

1616-301X

Publisher

Wiley

Issue

48

Volume

24

Page range

7580-7587

Department affiliated with

  • Physics and Astronomy Publications

Research groups affiliated with

  • Materials Physics Group Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2018-01-19

First Compliant Deposit (FCD) Date

2018-01-19

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