Tuning of electron injections for n-type organic transistor based on charge-transfer compounds

A high mobility (similar to1.0 cm(2)/V s) n-type organic field-effect transistor is devised in terms of the combination of semiconducting and metallic charge-transfer (CT) compounds, namely, DBTTF-TCNQ crystals as channels and TTF-TCNQ thin films as electrodes for carrier injections on top of the crystals. Comparison of the field-effect properties for devices with conventional electrode materials indicates the successful demonstration of the interface band engineering with use of the CT materials. (C) 2005 American Institute of Physics.