High-Performance Ambipolar Pentacene Organic Field-Effect Transistors on Poly(vinyl alcohol) Organic Gate Dielectric


  • Th.B.S. acknowledges the financial support of the Austrian Foundation for the Advancement of Science (FWF NANORAC contract No. N00103000).


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Growing organic semiconductors on dielectrics with different surface energies and dielectric constants results in striking changes of the film morphology (Figure, right). Ambipolar transport is reported in pentacene transistors on a PVA gate dielectric (left). The current–voltage characteristics correlate with capacitance–voltage investigations on metal–insulator–semiconductor structures.