Low-power and Fast-switching Organic Field-effect Transistors with Ionic Liquids

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<jats:title>ABSTRACT</jats:title><jats:p>We report high-mobility rubrene single-crystal field-effect transistors with ionic-liquid electrolytes used for gate dielectric layers. As the result of fast ionic diffusion to form electric double layers, their capacitances remain more than 10 μF/cm<jats:sup>2</jats:sup> even at 0.1 MHz. With high carrier mobility of 1.2 cm<jats:sup>2</jats:sup>/Vs in the rubrene crystal, pronounced current amplification is achieved at the gate voltage of only 0.2 V, which is two orders of magnitude smaller than that necessary for organic thin-film transistors with dielectric gate insulators. The results demonstrate that the ionic-liquid/organic semiconductor interfaces are suited to realize low-power and fast-switching field-effect transistors without sacrificing carrier mobility in forming the solid/liquid interfaces.</jats:p>

Journal

  • MRS Proceedings

    MRS Proceedings 1082 2008-01-01

    Springer Science and Business Media LLC

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