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Bridging electrode gaps with conducting polymers around the electrical percolation threshold

Abstract:
The conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT) is grown electrochemically using cyclic voltammetry between the gaps of interdigitated Au electrodes with separations of 10, 20, and 50 μm. Three electrical conductivity regimes are identified through resistance measurements and SEM imaging. The first is the insulating region where there are no complete conducting pathways between the electrodes. The second is the percolation region where a few localised conducting polymer bridges have formed. The third is the thin film region where a continuous conducting polymer film connects the electrodes. The demonstration of the ability to reliably generate conducting polymer electrical percolation networks is important for their future use in high sensitivity devices.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1016/j.elecom.2017.12.019

Authors

More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Materials
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Oxford college:
Linacre College
Role:
Author


Publisher:
Elsevier
Journal:
Electrochemistry Communications More from this journal
Volume:
87
Pages:
40–43
Publication date:
2017-12-19
Acceptance date:
2017-12-18
DOI:
ISSN:
1388-2481


Keywords:
Pubs id:
pubs:812607
UUID:
uuid:ac45ffdc-88fb-4b61-a3f4-ba71c4368d88
Local pid:
pubs:812607
Source identifiers:
812607
Deposit date:
2017-12-22
ARK identifier:

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