Compact Model for Organic Thin-Film Transistor

In this letter, a compact model for the dc current and capacitance of organic thin-film transistors is proposed. This model is based on the variable-range hopping-transport theory, and the double-exponential density-of-state function is assumed. The presented model can accurately describe the current from subthreshold regime to linear and saturation regime via a single unified formulation. Good agreement between the theoretical calculation and measurements of pentacene field-effect transistor is found. The application of this compact model on circuit simulation is also presented.