Threshold voltage extraction method in field-effect devices with power-law dependence of mobility on carrier density

We propose a new method suited for the extraction of the threshold voltage in 2D Field-Effect-Transistors. It can be applied to various classes of devices where the mobility exhibits a power-law dependence on carrier concentration, μ ∝ n<sub>S</sub><sup>α</sup>. The result doesn't depend on contact resistance. The method provides a physically sound value: V<sub>G</sub>-V<sub>T</sub> is proportional to the channel carrier density as checked with V<sub>G</sub>-dependent Hall measurements in companion gated Hall devices.