Toward Stable p‐Type Thiophene‐Based Organic Electrochemical Transistors
Source abstract
Abstract
Abstract Operational stability is essential for the success of organic electrochemical transistors (OECTs) in bioelectronics. The oxygen reduction reaction (ORR) is a common electrochemical side reaction that can compromise the stability of OECTs, but the relationship between ORR and materials degradation is poorly understood. In this study, the impact of ORR on the stability and degradation mechanisms of thiophene‐based OECTs is investigated. The findings show that an increase in pH during ORR leads to the degradation of the polymer backbone. By using a protective polymer glue layer between the semiconductor channel and the aqueous electrolyte, ORR is effectively suppressed and the stability of the OECTs is significantly improved, resulting in current retention of nearly 90% for ≈2 h cycling in the saturation regime.
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Research context
OpenAlex topics: Conducting polymers and applications · Fuel Cells and Related Materials · Organic Electronics and Photovoltaics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Laboratory of Organic Electronics Department of Science and Technology Linköping University Norrköping SE‐601 74 Sweden
Wallenberg Wood Science Center Linköping University Norrköping SE‐601 74 Sweden
Smart Photonic Materials Faculty of Engineering and Natural Sciences Tampere University Tampere 33720 Finland
Department of Chemistry Northwestern University Evanston IL 60208 USA
Department of Materials Science and Engineering Northwestern University Evanston IL 60208 USA
Department of Biomedical Engineering Northwestern University Evanston IL 60208 USA
Simpson Querrey Institute Northwestern University Chicago IL 60611 USA
Funding
Knut och Alice Wallenbergs Stiftelse · Vetenskapsrådet · European Commission · Academy of Finland · Horizon 2020 Framework Programme · National Science Foundation · H2020 Marie Skłodowska-Curie Actions
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