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A physics-based model and the corresponding simulation framework for the mobile-ionic field-effect transistor (MIFET) exhibiting the ferroelectric-like behaviors are innovatively proposed based on two-dimensional (2D) Poisson&#x2019;s equation and non-equilibrium Green&#x2019;s function (NEGF), coupling with ion drift-diffusion equations. The simulation framework captures the dynamic distribution of mobile ions&#x2019; concentrations within dielectric along the external electric field. TaN/amorphous-ZrO2/TaN capacitors are experimentally characterized for the model calibration. It is proved that the mobile ions dominate the ferroelectric-like behaviors in MIFETs. Sub-60 mV/decade can be achieved in MIFETs based on the proposed model, which is consistent with the experimental results.

A Physics-Based Model for Mobile-Ionic Field-Effect Transistors With Steep Subthreshold Swing