High-performance pentacene organic thin-film transistors with double layers of the terpolymer electret poly(vinylidene fluoride/ tetrafluoroethylene/ hexafluoropropylene) and the polymer polysvinyl cinnamated as a gate dielectric are reported. The electret is a high-k dielectric polymer with a static dielectric constant of epsilon=14. The transistors show an intrinsic field-effect mobility in the range of mu(i)= 1 cm(2)/V s and an on-to off-current ratio of about 10(5). High-k polymer gate dielectrics seem promising for organic nonvolatile memory and sensor field-effect transistors. (c) 2005 American Institute of Physics.
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