N-type organic electrochemical transistors with stability in water

Alexander Giovannitti, Christian B. Nielsen, Dan-Tiberiu Sbircea, Sahika Inal, Mary Donahue, Muhammad Rizwan Niazi, David A. Hanifi, Aram Amassian, George G. Malliaras, Jonathan Rivnay, Iain McCulloch

Research output: Contribution to journalArticlepeer-review

182 Scopus citations

Abstract

Organic electrochemical transistors (OECTs) are receiving significant attention due to their ability to efficiently transduce biological signals. A major limitation of this technology is that only p-type materials have been reported, which precludes the development of complementary circuits, and limits sensor technologies. Here, we report the first ever n-type OECT, with relatively balanced ambipolar charge transport characteristics based on a polymer that supports both hole and electron transport along its backbone when doped through an aqueous electrolyte and in the presence of oxygen. This new semiconducting polymer is designed specifically to facilitate ion transport and promote electrochemical doping. Stability measurements in water show no degradation when tested for 2 h under continuous cycling. This demonstration opens the possibility to develop complementary circuits based on OECTs and to improve the sophistication of bioelectronic devices.
Original languageEnglish (US)
JournalNature Communications
Volume7
Issue number1
DOIs
StatePublished - Oct 7 2016

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: We thank EPSRC Project EP/G037515/1, EC FP7 Project SC2 (610115), EC FP7 Project ArtESun (604397), EC FP7 POLYMED 612538, the Fondation pour la Recherche Médicale, the Agence Nationale de la Recherche (PolyProbe), and the Marie Curie ITNs OLIMPIA and OrgBio for financial support. D.A.H. was supported in part by an award from The Paul and Daisy Soros Fellowship for New Americans and NSF-GFRP. Use of the Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. DE-AC02-76SF00515.

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