Planar organic electrochemical transistors (OECTs) using PEDOT:PSS as the channel material and nanostructured carbon (nsC) as the gate electrode material and poly(sodium 4-styrenesulfonate (PSSNa) gel as the electrolyte were fabricated on flexible polyethylene terephthalate (Mylar®) substrates. The nsC was deposited at room-temperature by supersonic cluster beam deposition (SCBD). Interestingly, the OECT acts as a hybrid supercapacitor (to give a device that we indicate as transcap). The energy storage ability of transcaps has been studied with two cell configurations: one featuring PEDOT:PSS as the positive electrode and nsC as the negative electrode and another configuration with reversed electrode polarity. Potentiostatic charge/discharge studies show that both supercapacitors show good performance in terms of voltage retention, in particular, when PEDOT:PSS is used as the positive electrode. Galvanostatic charge-discharge characteristics show typical symmetric triangular shape, indicating a nearly ideal capacitive behavior with a high columbic efficiency (close to 100%).

Flexible conducting polymer transistors with supercapacitor function / Z. Yi, L.G. Bettini, G. Tomasello, P. Kumar, P. Piseri, I. Valitova, P. Milani, F. Soavi, F. Cicoira. - In: JOURNAL OF POLYMER SCIENCE. PART B, POLYMER PHYSICS. - ISSN 0887-6266. - 55:1(2017 Jan), pp. 96-103.

Flexible conducting polymer transistors with supercapacitor function

L.G. Bettini
Secondo
;
P. Piseri;P. Milani;
2017

Abstract

Planar organic electrochemical transistors (OECTs) using PEDOT:PSS as the channel material and nanostructured carbon (nsC) as the gate electrode material and poly(sodium 4-styrenesulfonate (PSSNa) gel as the electrolyte were fabricated on flexible polyethylene terephthalate (Mylar®) substrates. The nsC was deposited at room-temperature by supersonic cluster beam deposition (SCBD). Interestingly, the OECT acts as a hybrid supercapacitor (to give a device that we indicate as transcap). The energy storage ability of transcaps has been studied with two cell configurations: one featuring PEDOT:PSS as the positive electrode and nsC as the negative electrode and another configuration with reversed electrode polarity. Potentiostatic charge/discharge studies show that both supercapacitors show good performance in terms of voltage retention, in particular, when PEDOT:PSS is used as the positive electrode. Galvanostatic charge-discharge characteristics show typical symmetric triangular shape, indicating a nearly ideal capacitive behavior with a high columbic efficiency (close to 100%).
conducting polymers; device fabrication; organic electrochemical transistors; pedot:pss; supercapacitors; condensed matter physics; physical and theoretical chemistry; polymers and plastics; materials chemistry2506 metals and alloys
Settore FIS/03 - Fisica della Materia
2016
Centro Interdisciplinare Materiali ed Interfacce Nanostrutturati - CIMAINA
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/451972
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