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

Handle URI:
http://hdl.handle.net/10754/563819
Title:
Liquid electrolyte positioning along the device channel influences the operation of Organic Electro-Chemical Transistors
Authors:
D'angelo, Pasquale; Coppedè, Nicola; Tarabella, Giuseppe; Romeo, Agostino; Gentile, Francesco T.; Iannotta, Salvatore; Di Fabrizio, Enzo M. ( 0000-0001-5886-4678 ) ; Mosca, Roberto
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.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program
Publisher:
Elsevier BV
Journal:
Organic Electronics
Issue Date:
Nov-2014
DOI:
10.1016/j.orgel.2014.08.029
Type:
Article
ISSN:
15661199
Sponsors:
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.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorD'angelo, Pasqualeen
dc.contributor.authorCoppedè, Nicolaen
dc.contributor.authorTarabella, Giuseppeen
dc.contributor.authorRomeo, Agostinoen
dc.contributor.authorGentile, Francesco T.en
dc.contributor.authorIannotta, Salvatoreen
dc.contributor.authorDi Fabrizio, Enzo M.en
dc.contributor.authorMosca, Robertoen
dc.date.accessioned2015-08-03T12:15:29Zen
dc.date.available2015-08-03T12:15:29Zen
dc.date.issued2014-11en
dc.identifier.issn15661199en
dc.identifier.doi10.1016/j.orgel.2014.08.029en
dc.identifier.urihttp://hdl.handle.net/10754/563819en
dc.description.abstractIn 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.en
dc.description.sponsorshipThis 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.en
dc.publisherElsevier BVen
dc.subjectElectrochemical sensorsen
dc.subjectMoving-front techniqueen
dc.subjectOrganic Electro-Chemical Transistoren
dc.subjectPolymers hydrationen
dc.subjectSuper-hydrophobic surfaceen
dc.titleLiquid electrolyte positioning along the device channel influences the operation of Organic Electro-Chemical Transistorsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.identifier.journalOrganic Electronicsen
dc.contributor.institutionIstituto Materiali per Elettronica e Magnetismo, IMEM-CNR, Parco Area delle Scienze 37/AParma, Italyen
dc.contributor.institutionBioNEM Laboratory, Department of Experimental and Clinical Medicine, University Magna Graecia of CatanzaroCatanzaro, Italyen
dc.contributor.institutionNanostructures Department, Italian Institute of Technology, IIT, Via Morego 30Genova, Italyen
kaust.authorDi Fabrizio, Enzo M.en
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