Full-quantum study of AlGaN/GaN HEMTs with InAlN back-barrier

A full-quantum simulation of the electron transport in the two-dimensional electron gas (2DEG) of a AlGaN/GaN/InAlN/GaN heterostructure is carried out using the non-equilibrium Green function (NEGF) approach. The introduction of the InAlN back-barrier and the use of a ultra-thin GaN layer for the charge transport considerably entangles the physics of the device. A full-quantum approach is then deemed necessary to shed light on the transport properties of these devices. Gate-length and channel-thickness scaling are studied to assess the impact of confinement effects on the elctrostatic integrity of the device.