An Alternative Anionic Polyelectrolyte for Aqueous PEDOT Dispersions: Toward Printable Transparent Electrodes

Anna I Hofmann; Wiljan T T Smaal; Muhammad Mumtaz; Dimitrios Katsigiannopoulos; Cyril Brochon; Falk Schütze; Olaf R Hild; Eric Cloutet; Georges Hadziioannou

doi:10.1002/anie.201503024

An Alternative Anionic Polyelectrolyte for Aqueous PEDOT Dispersions: Toward Printable Transparent Electrodes

Angew Chem Int Ed Engl. 2015 Jul 13;54(29):8506-10. doi: 10.1002/anie.201503024. Epub 2015 Jun 1.

Authors

Anna I Hofmann¹, Wiljan T T Smaal¹, Muhammad Mumtaz¹, Dimitrios Katsigiannopoulos¹, Cyril Brochon¹, Falk Schütze², Olaf R Hild², Eric Cloutet³, Georges Hadziioannou⁴

Affiliations

¹ Laboratoire de Chimie des Polymères Organiques (LCPO), Université de Bordeaux, CNRS UMR 5629, Allée Geoffroy Saint Hilaire, Bât. B8, CS 50023, 33615 Pessac Cedex (France).
² Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP, Maria-Reiche-Straße 2, 01109 Dresden (Germany).
³ Laboratoire de Chimie des Polymères Organiques (LCPO), Université de Bordeaux, CNRS UMR 5629, Allée Geoffroy Saint Hilaire, Bât. B8, CS 50023, 33615 Pessac Cedex (France). cloutet@enscbp.fr.
⁴ Laboratoire de Chimie des Polymères Organiques (LCPO), Université de Bordeaux, CNRS UMR 5629, Allée Geoffroy Saint Hilaire, Bât. B8, CS 50023, 33615 Pessac Cedex (France). hadzii@enscbp.fr.

PMID: 26033573
DOI: 10.1002/anie.201503024

Abstract

Organic conducting polymers are promising electrode materials for printable organic electronics. One of the most studied conducting polymers is

Pedot: PSS, which is sufficiently conductive and transparent, but which shows some drawbacks, such as hygroscopicity and acidity. A new approach to stabilize PEDOT in aqueous dispersions involves the replacement of PSS with a basic polyanion based on a polystyrene backbone with (trifluoromethylsulfonyl)imide (TSFI) side groups. The

Pedot: PSTFSIK dispersions were obtained by oxidative polymerization of EDOT in an aqueous PSTFSIK solution and were characterized with regard to their composition, morphology, doping, rheological behavior, and optoelectronic performance. The

Pedot: PSTFSIK dispersions showed excellent printability and good optoelectronic performance (238 Ohm sq(-1) at 91% transmittance, σ>260 S cm(-1)) and were successfully integrated as flexible electrodes in OLED and OPV devices.

Keywords: conducting polymers; electrodes; optoelectronics; polyanions; printed organic electronics.