ABSTRACT
This chapter analyzes an analytical model for the self-consistent description of the vertical electron transport in van der Waals graphene-layer (GL) heterostructures with the GLs separated by the barriers layers. It accounts for the nonuniformity of the self-consistent electric field governed by the Poisson equation which accounts for the variation of the electron population in GLs. The chapter finds the spatial distributions of the electric field and potential with the high-electric-field domain near the emitter GL in the GL heterostructures with different numbers of GLs. It demonstrates that the Peltier cooling of the two-dimensional electron gas in the emitter GL can strongly affect the current-voltage characteristics resulting in their saturation. An extended version of the developed model can also be applied for the consideration of the GL heterostructures response to incoming THz radiation and strict calculations of the responsivity and detectivity of such bolometric detectors.
