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Nernst-Planck-Poisson analysis of electrolyte-gated organic field-effect transistors
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- Delavari, Najmeh (author)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten
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- Tybrandt, Klas (author)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten
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- Berggren, Magnus (author)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten
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- (creator_code:org_t)
- 2021-07-29
- 2021
- English.
- In: Journal of Physics D. - : IOP PUBLISHING LTD. - 0022-3727 .- 1361-6463. ; 54:41
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Electrolyte-gated organic field-effect transistors (EGOFETs) represent a class of organic thin-film transistors suited for sensing and biosensing in aqueous media, often at physiological conditions. The EGOFET device includes electrodes and an organic semiconductor channel in direct contact with an electrolyte. Upon operation, electric double layers are formed along the gate-electrolyte and the channel-electrolyte interfaces, but ions do not penetrate the channel. This mode of operation allows the EGOFET devices to run at low voltages and at a speed corresponding to the rate of forming electric double layers. Currently, there is a lack of a detailed quantitative model of the EGOFETs that can predict device performance based on geometry and material parameters. In the present paper, for the first time, an EGOFET model is proposed utilizing the Nernst-Planck-Poisson equations to describe, on equal footing, both the polymer and the electrolyte regions of the device configuration. The generated calculations exhibit semi-qualitative agreement with experimentally measured output and transfer curves.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Keyword
- Nernst-Planck-Poisson equations; electrolyte-gated organic field-effect transistors (EGOFET); organic electronics; device modelling
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Delavari, Najmeh
- Tybrandt, Klas
- Berggren, Magnus
- Piro, Benoit
- Noel, Vincent
- Mattana, Giorgio
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- Zozoulenko, Igor
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