title: Optical and electrical properties of electrochemically doped organic field effect transistors.
abstract: Mixed ionic/electronic conduction in conducting polymers introduces new physics/chemistry and an additional functionality in organic optoelectronic devices. The incorporation of an ionic species in a conjugated polymer matrix results in the increase in electrical conductivity associated with the electrochemical doping of the material. In recent years polymer light emitting electrochemical cells (LECs) have been demonstrated. In such electrochemical optoelectronic devices, mobile ions facilitate the efficient injection of electronic charge carriers creating "in situ" doping regions near the electrodes and lead to efficient electroluminescence light emission. Here, we introduce the same concept of an LEC in the organic field effect transistors (OFETs). The presence of both electronic and ionic charge carriers in the active layers of OFETs brings high charge carrier mobility and light emission even using symmetric source and drain metal electrodes.
authors.affiliation: Department of Physics, Faculty of Arts and Sciences, Yildiz Technical University, Davutpasa Campus, Esenler, 34210 Istanbul, Turkey ; Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University of Linz, A-4040 Linz, Austria.
authors.forename: Cigdem
authors.initials: C
authors.lastname: Yumusak
authors.forename: Mamatimin
authors.initials: M
authors.lastname: Abbas
authors.forename: Niyazi Serdar
authors.initials: NS
authors.lastname: Sariciftci
keywords: Electrochemical doping; Electrochemical light emitting transistor; Electrochemical transistor; Organic electronics; Organic field effect transistor; Organic light emitting transistor