Abstract
Pentacene organic field-effect transistors (OFETs) were fabricated with multilayer graphene films as the source and drain electrodes. The electrical properties of graphene electrode OFETs were monitored as the fabrication conditions were varied with surface treatments on the dielectric layer and substrate. With surface treatments, the performance of the graphene-electrode pentacene OFETs were significantly enhanced; the output currents increased by more than tenfold, and the mobility increased to levels as high as 1.2 cm2/V s. Our results may foster the wide application of graphene electrodes in OFETs and other types of organic electronic devices.
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