Liquid electrolyte positioning along the device channel influences the operation of Organic Electro-Chemical Transistors

Pasquale D'angelo; Nicola Coppedè; Giuseppe Tarabella; Agostino Romeo; Francesco T. Gentile; Salvatore Iannotta; Enzo M. Di Fabrizio; Roberto Mosca

doi:10.1016/j.orgel.2014.08.029

Liquid electrolyte positioning along the device channel influences the operation of Organic Electro-Chemical Transistors

Pasquale D'angelo, Nicola Coppedè, Giuseppe Tarabella, Agostino Romeo, Francesco T. Gentile, Salvatore Iannotta, Enzo M. Di Fabrizio, Roberto Mosca

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

11 Scopus citations

Abstract

In this work, we show the influence of the liquid electrolyte adsorption by porous films made of poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate), PEDOT:PSS, on the operation of an Organic Electro-Chemical Transistor with an active channel based on these polymeric films. In particular, the effect of film hydration on device performance is evaluated by studying its electrical response as a function of the spatial position between the electrolyte and the channel electrodes. This is done by depositing a PEDOT:PSS film on a super-hydrophobic surface aimed at controlling the electrolyte confinement next to the electrodes. The device response shows that the confinement of ionic liquids near to the drain electrode results in a worsening of the current modulation. This result has been interpreted in the light of studies dealing with the transport of ions in semiconducting polymers, indicating that the electrolyte adsorption by the polymeric film implies the formation of liquid pathways inside its bulk. These pathways, in particular, affect the device response because they are able to assist the drift of ionic species in the electrolyte towards the drain electrode. The effect of electrolyte adsorption on the device operation is confirmed by means of moving-front measurements, and is related to the reproducibility of the device operation curves by measuring repeatedly its electrical response.

Original language	English (US)
Pages (from-to)	3016-3023
Number of pages	8
Journal	Organic Electronics
Volume	15
Issue number	11
DOIs	https://doi.org/10.1016/j.orgel.2014.08.029
State	Published - Nov 2014

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work has been supported by the Project BioNiMed (Multifunctional Hybrid Nanosystems for Biomedical Applications) from Fondazione Cassa di Risparmio di Parma (CARIPARMA) and by the N-Chem project within the CNR-NANOMAX Flagship program.

ASJC Scopus subject areas

Materials Chemistry
Biomaterials
General Chemistry
Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering
Condensed Matter Physics

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10.1016/j.orgel.2014.08.029

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title = "Liquid electrolyte positioning along the device channel influences the operation of Organic Electro-Chemical Transistors",

abstract = "In this work, we show the influence of the liquid electrolyte adsorption by porous films made of poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate), PEDOT:PSS, on the operation of an Organic Electro-Chemical Transistor with an active channel based on these polymeric films. In particular, the effect of film hydration on device performance is evaluated by studying its electrical response as a function of the spatial position between the electrolyte and the channel electrodes. This is done by depositing a PEDOT:PSS film on a super-hydrophobic surface aimed at controlling the electrolyte confinement next to the electrodes. The device response shows that the confinement of ionic liquids near to the drain electrode results in a worsening of the current modulation. This result has been interpreted in the light of studies dealing with the transport of ions in semiconducting polymers, indicating that the electrolyte adsorption by the polymeric film implies the formation of liquid pathways inside its bulk. These pathways, in particular, affect the device response because they are able to assist the drift of ionic species in the electrolyte towards the drain electrode. The effect of electrolyte adsorption on the device operation is confirmed by means of moving-front measurements, and is related to the reproducibility of the device operation curves by measuring repeatedly its electrical response.",

author = "Pasquale D'angelo and Nicola Copped{\`e} and Giuseppe Tarabella and Agostino Romeo and Gentile, {Francesco T.} and Salvatore Iannotta and {Di Fabrizio}, {Enzo M.} and Roberto Mosca",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work has been supported by the Project BioNiMed (Multifunctional Hybrid Nanosystems for Biomedical Applications) from Fondazione Cassa di Risparmio di Parma (CARIPARMA) and by the N-Chem project within the CNR-NANOMAX Flagship program.",

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AU - D'angelo, Pasquale

AU - Coppedè, Nicola

AU - Tarabella, Giuseppe

AU - Romeo, Agostino

AU - Gentile, Francesco T.

AU - Iannotta, Salvatore

AU - Di Fabrizio, Enzo M.

AU - Mosca, Roberto

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work has been supported by the Project BioNiMed (Multifunctional Hybrid Nanosystems for Biomedical Applications) from Fondazione Cassa di Risparmio di Parma (CARIPARMA) and by the N-Chem project within the CNR-NANOMAX Flagship program.

PY - 2014/11

Y1 - 2014/11

N2 - In this work, we show the influence of the liquid electrolyte adsorption by porous films made of poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate), PEDOT:PSS, on the operation of an Organic Electro-Chemical Transistor with an active channel based on these polymeric films. In particular, the effect of film hydration on device performance is evaluated by studying its electrical response as a function of the spatial position between the electrolyte and the channel electrodes. This is done by depositing a PEDOT:PSS film on a super-hydrophobic surface aimed at controlling the electrolyte confinement next to the electrodes. The device response shows that the confinement of ionic liquids near to the drain electrode results in a worsening of the current modulation. This result has been interpreted in the light of studies dealing with the transport of ions in semiconducting polymers, indicating that the electrolyte adsorption by the polymeric film implies the formation of liquid pathways inside its bulk. These pathways, in particular, affect the device response because they are able to assist the drift of ionic species in the electrolyte towards the drain electrode. The effect of electrolyte adsorption on the device operation is confirmed by means of moving-front measurements, and is related to the reproducibility of the device operation curves by measuring repeatedly its electrical response.

AB - In this work, we show the influence of the liquid electrolyte adsorption by porous films made of poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate), PEDOT:PSS, on the operation of an Organic Electro-Chemical Transistor with an active channel based on these polymeric films. In particular, the effect of film hydration on device performance is evaluated by studying its electrical response as a function of the spatial position between the electrolyte and the channel electrodes. This is done by depositing a PEDOT:PSS film on a super-hydrophobic surface aimed at controlling the electrolyte confinement next to the electrodes. The device response shows that the confinement of ionic liquids near to the drain electrode results in a worsening of the current modulation. This result has been interpreted in the light of studies dealing with the transport of ions in semiconducting polymers, indicating that the electrolyte adsorption by the polymeric film implies the formation of liquid pathways inside its bulk. These pathways, in particular, affect the device response because they are able to assist the drift of ionic species in the electrolyte towards the drain electrode. The effect of electrolyte adsorption on the device operation is confirmed by means of moving-front measurements, and is related to the reproducibility of the device operation curves by measuring repeatedly its electrical response.

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JO - Organic Electronics

JF - Organic Electronics

IS - 11

ER -

Liquid electrolyte positioning along the device channel influences the operation of Organic Electro-Chemical Transistors

Abstract

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