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We have built a model organic field-effect transistor that is basically composed of a single layer of pentacene crystal in interaction with an oxide surface. Drain and source contacts are ohmic so that the pentacene layer can carry a current density as high as 3000 A cm-2 at a gate voltage of -60 V. Four-probe and two-probe transport measurements as a function of temperature and fields are presented in relation with structural near-field observations. The experimental results suggest a simple two-dimensional model where the equilibrium between free and trapped carriers at the oxide interface determines the OFET characteristics and performance
Mihai Adrian Ionescu, Igor Stolichnov, Ali Saeidi, Teodor Rosca, Matteo Cavalieri
Rosario Scopelliti, Holger Frauenrath, Philippe Bugnon, Stéphane Suarez, Riccardo Petraglia, Jan Gebers, Piotr De Silva, Bilal Özen