806253.fig.001
Figure 1: Schematic cross-section of a basic AlGaN/GaN HFET structure, showing the physical parameters of the NCSU HFET model. Four describe layout: . Four describe the barrier layer, . Seven describe the GaN buffer, for the GaN itself, three for electron transport in the GaN , and two for its interface with AlGaN, . The gate metal is characterized by its electron affinity, .