Effect of channel thickness on noise in organic electrochemical transistors

Anastasios G. Polyravas; Nathan Schaefer; Vincenzo F. Curto; Andrea Bonaccini Calia; Anton Guimera-Brunet; Jose A. Garrido; George G. Malliaras

doi:10.1063/5.0019693

Effect of channel thickness on noise in organic electrochemical transistors

Anastasios G. Polyravas, Nathan Schaefer, Vincenzo F. Curto, Andrea Bonaccini Calia, Anton Guimera-Brunet, Jose A. Garrido, George G. Malliaras

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Organic electrochemical transistors (OECTs) have been widely used as transducers in electrophysiology and other biosensing applications. Their identifying characteristic is a transconductance that increases with channel thickness, and this provides a facile mechanism to achieve high signal amplification. However, little is known about their noise behavior. Here, we investigate noise and extract metrics for the signal-to-noise ratio and limit of detection in OECTs with different channel thicknesses. These metrics are shown to improve as the channel thickness increases, demonstrating that OECTs can be easily optimized to show not only high amplification, but also low noise.

Original language	English (US)
Pages (from-to)	073302
Journal	Applied Physics Letters
Volume	117
Issue number	7
DOIs	https://doi.org/10.1063/5.0019693
State	Published - Aug 17 2020
Externally published	Yes

Bibliographical note

KAUST Repository Item: Exported on 2021-02-16
Acknowledged KAUST grant number(s): OSR-2016-CRG5-3003
Acknowledgements: This work was funded by the European Union's Horizon 2020 research and innovation programme under Grant Agreement No. 732032 (BrainCom) the King Abdullah University of Science and Technology (KAUST) Office of sponsored Research (OSR) under Award No. OSR-2016-CRG5-3003. Authors also acknowledge funding from the 2DTecBio (FIS2017-85787-R) funded by the Spanish Ministry of Science, Innovation and Universities, the State Research Agency (AEI), and the European Regional Development Fund. Thanks are due to Elise Jenkins for help with the model.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

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title = "Effect of channel thickness on noise in organic electrochemical transistors",

abstract = "Organic electrochemical transistors (OECTs) have been widely used as transducers in electrophysiology and other biosensing applications. Their identifying characteristic is a transconductance that increases with channel thickness, and this provides a facile mechanism to achieve high signal amplification. However, little is known about their noise behavior. Here, we investigate noise and extract metrics for the signal-to-noise ratio and limit of detection in OECTs with different channel thicknesses. These metrics are shown to improve as the channel thickness increases, demonstrating that OECTs can be easily optimized to show not only high amplification, but also low noise.",

author = "Polyravas, {Anastasios G.} and Nathan Schaefer and Curto, {Vincenzo F.} and Calia, {Andrea Bonaccini} and Anton Guimera-Brunet and Garrido, {Jose A.} and Malliaras, {George G.}",

note = "KAUST Repository Item: Exported on 2021-02-16 Acknowledged KAUST grant number(s): OSR-2016-CRG5-3003 Acknowledgements: This work was funded by the European Union's Horizon 2020 research and innovation programme under Grant Agreement No. 732032 (BrainCom) the King Abdullah University of Science and Technology (KAUST) Office of sponsored Research (OSR) under Award No. OSR-2016-CRG5-3003. Authors also acknowledge funding from the 2DTecBio (FIS2017-85787-R) funded by the Spanish Ministry of Science, Innovation and Universities, the State Research Agency (AEI), and the European Regional Development Fund. Thanks are due to Elise Jenkins for help with the model. This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

year = "2020",

month = aug,

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doi = "10.1063/5.0019693",

language = "English (US)",

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pages = "073302",

journal = "Applied Physics Letters",

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T1 - Effect of channel thickness on noise in organic electrochemical transistors

AU - Polyravas, Anastasios G.

AU - Schaefer, Nathan

AU - Curto, Vincenzo F.

AU - Calia, Andrea Bonaccini

AU - Guimera-Brunet, Anton

AU - Garrido, Jose A.

AU - Malliaras, George G.

N1 - KAUST Repository Item: Exported on 2021-02-16 Acknowledged KAUST grant number(s): OSR-2016-CRG5-3003 Acknowledgements: This work was funded by the European Union's Horizon 2020 research and innovation programme under Grant Agreement No. 732032 (BrainCom) the King Abdullah University of Science and Technology (KAUST) Office of sponsored Research (OSR) under Award No. OSR-2016-CRG5-3003. Authors also acknowledge funding from the 2DTecBio (FIS2017-85787-R) funded by the Spanish Ministry of Science, Innovation and Universities, the State Research Agency (AEI), and the European Regional Development Fund. Thanks are due to Elise Jenkins for help with the model. This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2020/8/17

Y1 - 2020/8/17

N2 - Organic electrochemical transistors (OECTs) have been widely used as transducers in electrophysiology and other biosensing applications. Their identifying characteristic is a transconductance that increases with channel thickness, and this provides a facile mechanism to achieve high signal amplification. However, little is known about their noise behavior. Here, we investigate noise and extract metrics for the signal-to-noise ratio and limit of detection in OECTs with different channel thicknesses. These metrics are shown to improve as the channel thickness increases, demonstrating that OECTs can be easily optimized to show not only high amplification, but also low noise.

AB - Organic electrochemical transistors (OECTs) have been widely used as transducers in electrophysiology and other biosensing applications. Their identifying characteristic is a transconductance that increases with channel thickness, and this provides a facile mechanism to achieve high signal amplification. However, little is known about their noise behavior. Here, we investigate noise and extract metrics for the signal-to-noise ratio and limit of detection in OECTs with different channel thicknesses. These metrics are shown to improve as the channel thickness increases, demonstrating that OECTs can be easily optimized to show not only high amplification, but also low noise.

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M3 - Article

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VL - 117

SP - 073302

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 7

ER -

Effect of channel thickness on noise in organic electrochemical transistors

Abstract

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