0000000000200719

AUTHOR

George G. Malliaras

showing 4 related works from this author

Structural control of mixed ionic and electronic transport in conducting polymers

2016

Poly(3,4-ethylenedioxythiophene) doped with poly(styrenesulfonate), PEDOT:PSS, has been utilized for over two decades as a stable, solution-processable hole conductor. While its hole transport properties have been the subject of intense investigation, recent work has turned to PEDOT:PSS as a mixed ionic/electronic conductor in applications including bioelectronics, energy storage and management, and soft robotics. Conducting polymers can efficiently transport both holes and ions when sufficiently hydrated, however, little is known about the role of morphology on mixed conduction. Here, we show that bulk ionic and electronic mobilities are simultaneously affected by processing-induced change…

Conductive polymerOrganic electronics0306 Physical Chemistry (incl. Structural)BioelectronicsMultidisciplinaryMaterials scienceScienceDopingQGeneral Physics and AstronomyIonic bondingNanotechnology02 engineering and technologyGeneral Chemistry010402 general chemistry021001 nanoscience & nanotechnology01 natural sciencesGeneral Biochemistry Genetics and Molecular BiologyArticle0104 chemical sciencesIonPEDOT:PSSNano-0210 nano-technology0912 Materials EngineeringNature Communications
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Ion-Selective Organic Electrochemical Transistors

2014

Ion-selective organic electrochemical transistors with sensitivity to potassium approaching 50 μA dec(-1) are demonstrated. The remarkable sensitivity arises from the use of high transconductance devices, where the conducting polymer is in direct contact with a reference gel electrolyte and integrated with an ion-selective membrane.

Materials scienceConductometryTransistors ElectronicTransconductanceInorganic chemistryBiosensing TechniquesElectrolyteElectrochemistrylaw.inventionlawGeneral Materials ScienceOrganic ChemicalsPolyvinyl ChlorideIonsConductive polymerbusiness.industryMechanical EngineeringTransistorMembranes ArtificialEquipment DesignEquipment Failure AnalysisMembraneMechanics of MaterialsPotassiumOptoelectronicsbusinessBiosensorOrganic electrochemical transistorAdvanced Materials
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Influence of device geometry on sensor characteristics of planar organic electrochemical transistors.

2009

The response of PEDOT:PSS planar electrochemical transistors to H2O2 can be tuned by varying the ratio between the areas of the channel and the gate electrode. Devices with small gates show lower background signal and higher sensitivity. The detection range, on the other hand, is found to be rather independent of the gate/channel area ratio.

Conductive polymerOrganic electronicsMaterials scienceTransistors Electronicbusiness.industryMechanical EngineeringTransistorEquipment Designlaw.inventionEquipment Failure AnalysisPlanarPEDOT:PSSMechanics of MaterialslawElectrodeElectrochemistryOptoelectronicsGeneral Materials ScienceOrganic ChemicalsbusinessSensitivity (electronics)ElectrodesOrganic electrochemical transistorAdvanced materials (Deerfield Beach, Fla.)
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Controlling the mode of operation of organic transistors through side chain engineering

2016

Electrolyte-gated organic transistors offer low bias operation facilitated by direct contact of the transistor channel with an electrolyte. Their operation mode is generally defined by the dimensionality of charge transport, where a field-effect transistor allows for electrostatic charge accumulation at the electrolyte/semiconductor interface, whereas an organic electrochemical transistor (OECT) facilitates penetration of ions into the bulk of the channel, considered a slow process, leading to volumetric doping and electronic transport. Conducting polymer OECTs allow for fast switching and high currents through incorporation of excess, hygroscopic ionic phases, but operate in depletion mode…

Materials scienceTransconductanceNanotechnologyHardware_PERFORMANCEANDRELIABILITY02 engineering and technologyElectrolyte010402 general chemistry01 natural scienceslaw.inventionelectrochemical transistorlawMD MultidisciplinaryHardware_INTEGRATEDCIRCUITSSide chainConductive polymerMultidisciplinarySubthreshold conductionbusiness.industrysemiconducting polymersTransistor021001 nanoscience & nanotechnologyequipment and supplies0104 chemical sciencesorganic electronicsSemiconductorPhysical SciencesOptoelectronics0210 nano-technologybusinessHardware_LOGICDESIGNOrganic electrochemical transistor
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