High-mobility pentacene organic field-effect transistors with a high-dielectric-constant fluorinated polymer film gate dielectric

Stadlober, Barbara; Zirkl, Martin; Beutl, Michael; Leising, Günther; Bauer-Gogonea, Simona; Bauer, Siegfried
June 2005
Applied Physics Letters;6/13/2005, Vol. 86 Issue 24, p242902
Academic Journal
High-performance pentacene organic thin-film transistors with double layers of the terpolymer electret poly(vinylidene fluoride/tetrafluoroethylene/hexafluoropropylene) and the polymer poly(vinyl cinnamate) as a gate dielectric are reported. The electret is a high-k dielectric polymer with a static dielectric constant of [variant_greek_epsilon]=14. The transistors show an intrinsic field-effect mobility in the range of μi=1 cm2/V s and an on- to off-current ratio of about 105. High-k polymer gate dielectrics seem promising for organic nonvolatile memory and sensor field-effect transistors.


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