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Subthreshold Operation of Organic Electrochemical Transistors for Biosignal Amplification

With a host of new materials being investigated as active layers in organic electrochemical transistors (OECTs), several advantageous characteristics can be utilized to improve transduction and circuit level performance for biosensing applications. Here, the subthreshold region of operation of one r...

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Autores principales: Venkatraman, Vishak, Friedlein, Jacob T., Giovannitti, Alexander, Maria, Iuliana P., McCulloch, Iain, McLeod, Robert R., Rivnay, Jonathan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6097142/
https://www.ncbi.nlm.nih.gov/pubmed/30128254
http://dx.doi.org/10.1002/advs.201800453
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author Venkatraman, Vishak
Friedlein, Jacob T.
Giovannitti, Alexander
Maria, Iuliana P.
McCulloch, Iain
McLeod, Robert R.
Rivnay, Jonathan
author_facet Venkatraman, Vishak
Friedlein, Jacob T.
Giovannitti, Alexander
Maria, Iuliana P.
McCulloch, Iain
McLeod, Robert R.
Rivnay, Jonathan
author_sort Venkatraman, Vishak
collection PubMed
description With a host of new materials being investigated as active layers in organic electrochemical transistors (OECTs), several advantageous characteristics can be utilized to improve transduction and circuit level performance for biosensing applications. Here, the subthreshold region of operation of one recently reported high performing OECT material, poly(2‐(3,3′‐bis(2‐(2‐(2‐methoxyethoxy)ethoxy)ethoxy)‐[2,2′‐bithiophen]‐5‐yl)thieno[3,2‐b]thiophene), p(g2T‐TT) is investigated. The material's high subthreshold slope (SS) is exploited for high voltage gain and low power consumption. An ≈5× improvement in voltage gain (A (V)) for devices engineered for equal output current and 370× lower power consumption in the subthreshold region, in comparison to operation in the higher transconductance (g (m)), superthreshold region usually reported in the literature, are reported. Electrophysiological sensing is demonstrated using the subthreshold regime of p(g2T‐TT) devices and it is suggested that operation in this regime enables low power, enhanced sensing for a broad range of bioelectronic applications. Finally, the accessibility of the subthreshold regime of p(g2T‐TT) is evaluated in comparison with the prototypical poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), and the role of material design in achieving favorable properties for subthreshold operation is discussed.
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spelling pubmed-60971422018-08-20 Subthreshold Operation of Organic Electrochemical Transistors for Biosignal Amplification Venkatraman, Vishak Friedlein, Jacob T. Giovannitti, Alexander Maria, Iuliana P. McCulloch, Iain McLeod, Robert R. Rivnay, Jonathan Adv Sci (Weinh) Full Papers With a host of new materials being investigated as active layers in organic electrochemical transistors (OECTs), several advantageous characteristics can be utilized to improve transduction and circuit level performance for biosensing applications. Here, the subthreshold region of operation of one recently reported high performing OECT material, poly(2‐(3,3′‐bis(2‐(2‐(2‐methoxyethoxy)ethoxy)ethoxy)‐[2,2′‐bithiophen]‐5‐yl)thieno[3,2‐b]thiophene), p(g2T‐TT) is investigated. The material's high subthreshold slope (SS) is exploited for high voltage gain and low power consumption. An ≈5× improvement in voltage gain (A (V)) for devices engineered for equal output current and 370× lower power consumption in the subthreshold region, in comparison to operation in the higher transconductance (g (m)), superthreshold region usually reported in the literature, are reported. Electrophysiological sensing is demonstrated using the subthreshold regime of p(g2T‐TT) devices and it is suggested that operation in this regime enables low power, enhanced sensing for a broad range of bioelectronic applications. Finally, the accessibility of the subthreshold regime of p(g2T‐TT) is evaluated in comparison with the prototypical poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), and the role of material design in achieving favorable properties for subthreshold operation is discussed. John Wiley and Sons Inc. 2018-07-04 /pmc/articles/PMC6097142/ /pubmed/30128254 http://dx.doi.org/10.1002/advs.201800453 Text en © 2018 The Authors. Published by WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Full Papers
Venkatraman, Vishak
Friedlein, Jacob T.
Giovannitti, Alexander
Maria, Iuliana P.
McCulloch, Iain
McLeod, Robert R.
Rivnay, Jonathan
Subthreshold Operation of Organic Electrochemical Transistors for Biosignal Amplification
title Subthreshold Operation of Organic Electrochemical Transistors for Biosignal Amplification
title_full Subthreshold Operation of Organic Electrochemical Transistors for Biosignal Amplification
title_fullStr Subthreshold Operation of Organic Electrochemical Transistors for Biosignal Amplification
title_full_unstemmed Subthreshold Operation of Organic Electrochemical Transistors for Biosignal Amplification
title_short Subthreshold Operation of Organic Electrochemical Transistors for Biosignal Amplification
title_sort subthreshold operation of organic electrochemical transistors for biosignal amplification
topic Full Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6097142/
https://www.ncbi.nlm.nih.gov/pubmed/30128254
http://dx.doi.org/10.1002/advs.201800453
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