Characterization of the ferroelectric transistor and its applications in analog circuits.

摘要

The basic properties of the ferroelectric field-effect transistor (FeFET) and this transistor's use in the common-drain amplifier circuit configuration are examined. The FeFET's properties of spontaneous polarization, hysteresis, and drain current decay are detailed. Drain current equations are developed based on the Fermi-Dirac equation and are used to model the FeFET's I-V characteristics. Plots of the FeFET's measured and modeled I-V characteristics are compared. Then, the FeFET-based common-drain amplifier circuit is built. The effect of frequency and load resistance on each of the output peak voltage, phase shift, and voltage gain are developed based on empirical data. It has been determined that each of these three output parameters is logarithmically related to frequency and load resistance. A model is then developed in Microsoft Excel to describe the characteristics of the FeFET common-drain amplifier. It is the first mathematical-based model to depict the behavior of a FeFET-based amplifier.