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Organic Electrochemical Transistors Based on the Conjugated Polyelectrolyte PCPDTBT‐SO 3 K (CPE‐K)
Author(s) -
Lill Alexander T.,
Cao David X.,
Schrock Max,
Vollbrecht Joachim,
Huang Jianfei,
NguyenDang Tung,
Brus Viktor V.,
Yurash Brett,
Leifert Dirk,
Bazan Guillermo C.,
Nguyen ThucQuyen
Publication year - 2020
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201908120
Subject(s) - materials science , transconductance , bioelectronics , transistor , neuromorphic engineering , nanotechnology , optoelectronics , analyte , conformable matrix , polyelectrolyte , interfacing , electrochemistry , biosensor , electrode , electrical engineering , computer science , voltage , polymer , composite material , artificial neural network , engineering , computer hardware , chemistry , machine learning
PCPDTBT‐SO 3 K (CPE‐K), a conjugated polyelectrolyte, is presented as a mixed conductor material that can be used to fabricate high transconductance accumulation mode organic electrochemical transistors (OECTs). OECTs are utilized in a wide range of applications such as analyte detection, neural interfacing, impedance sensing, and neuromorphic computing. The use of interdigitated contacts to enable high transconductance in a relatively small device area in comparison to standard contacts is demonstrated. Such characteristics are highly desired in applications such as neural‐activity sensing, where the device area must be minimized to reduce invasiveness. The physical and electrical properties of CPE‐K are fully characterized to allow a direct comparison to other top performing OECT materials. CPE‐K demonstrates an electrical performance that is among the best reported in the literature for OECT materials. In addition, CPE‐K OECTs operate in the accumulation mode, which allows for much lower energy consumption in comparison to commonly used depletion mode devices.