Publication detail

High conductivity PEDOT:PSS through laser micro-annealing: mechanisms and application

Troughton, J. Peillon, N. Borbely, A. Rodriguez-Pereira, J. Pavlinak, D. Macak, JM. Djenizian, T. Ramuz, M.

Original Title

High conductivity PEDOT:PSS through laser micro-annealing: mechanisms and application

Type

journal article in Web of Science

Language

English

Original Abstract

Conductive polymers represent the next generation of soft, flexible electronics. Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is among the most widely used of these, despite having a relatively low conductivity when deposited in the standard form with no additional chemical dopants. This is often mitigated through chemical doping, but this is associated with changes in processing easy, mechanical stability, or compatibility. This paper reports a laser micro-annealing process for PEDOT:PSS, including process optimisation, investigation of the underlying mechanism, and application in organic electronics. The laser micro-annealing increases the material conductivity from 1 S cm(-1) to around 360 S cm(-1) without any additive or post-deposition chemical treatments. This process is used, along with a laser ablation step, to fabricate organic electrochemical transistors (OECTs). These show comparable performance to material fabricated with common additives, while allowing rapid production of myriad devices. The additive and photolithography free processes enables simple fabrication of devices without the processing complications introduced by the use of additional chemicals. Following process optimisation, detailed study of the material properties suggests the dominant mechanism for this conductivity enhancement is the agglomeration of PEDOT cores within the film, facilitated by the moderate local heating action of the laser.

Keywords

THIN-FILMS; ELECTRICAL-CONDUCTIVITY; TRANSPARENT ELECTRODE; SULFONATE) FILM; POLYMER; ENHANCEMENT; PEDOT/PSS; IMPROVEMENT; MORPHOLOGY; REDUCTION

Authors

Troughton, J.; Peillon, N.; Borbely, A.; Rodriguez-Pereira, J.; Pavlinak, D.; Macak, JM.; Djenizian, T.; Ramuz, M.

Released

10. 11. 2022

Publisher

ROYAL SOC CHEMISTRY

Location

CAMBRIDGE

ISBN

2050-7534

Periodical

Journal of Materials Chemistry C

Year of study

10

Number

43

State

United Kingdom of Great Britain and Northern Ireland

Pages from

16592

Pages to

16603

Pages count

12

URL

https://pubs.rsc.org/en/content/articlelanding/2022/TC/D2TC03812A

BibTex

@article{BUT182362,
  author="Troughton, J. and Peillon, N. and Borbely, A. and Rodriguez-Pereira, J. and Pavlinak, D. and Macak, JM. and Djenizian, T. and Ramuz, M.",
  title="High conductivity PEDOT:PSS through laser micro-annealing: mechanisms and application",
  journal="Journal of Materials Chemistry C",
  year="2022",
  volume="10",
  number="43",
  pages="16592--16603",
  doi="10.1039/d2tc03812a",
  issn="2050-7534",
  url="https://pubs.rsc.org/en/content/articlelanding/2022/TC/D2TC03812A"
}