Cooperative polymer gate dielectrics in organic thin-film transistors

A concept is introduced in which two polymer dielectrics are made cooperative in acting as the gate insulator for organic thin-film transistors. The bilayer insulator consists of a thin polymer dielectric in contact with the active layer that can induce good electrical properties and a much thicker dielectric with good dielectric properties. These dielectrics are cooperative in combining the best each can offer for a high mobility and a negligible hysteresis. (C) 2004 American Institute of Physics.