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A Compact Model for Organic Field-Effect Transistors With Improved Output Asymptotic Behaviors

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7 Author(s)
Chang Hyun Kim ; Laboratoire de Physique des Interfaces et des Couches Minces (CNRS UMR-7647), Ecole Polytechnique, Palaiseau, France ; Castro-Carranza, A. ; Estrada, M. ; Cerdeira, A.
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Here, we propose an advanced compact analytical current–voltage model for organic field-effect transistors (OFETs), which can be incorporated into SPICE-type circuit simulators. We improved the output saturation behavior by introducing a new asymptotic function that also enables more precise low-voltage current and conductance fitting. A new expression for the subthreshold current was suggested to cover all operation regimes of OFETs. All model parameters were extracted by a systematic method, and the comparison of the modeled current with the experimental data on pentacene-based OFETs confirmed the validity of the model over a wide operation range.

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Electron Devices, IEEE Transactions on  (Volume:60 ,  Issue: 3 )