Pentacene Organic Mosfets with Au and Pt Bottom Contacts

This work reports on the fabrication and characterization of the organic thin film transistors OTFTs. Pentacene transistors are fabricated in bottom S/D contact configurations on preoxidized Si wavers. Two different metals - Pt, Au - are used for the contacts. Similar performances are reported for Au and Pt bottom contact devices. It is revealed that the pentacene deposition rate critically influences the morphology of the film and the transistor performances. Special test structures revealed that the carrier conduction takes place only in the organic layer