Capacitancevoltage characterization of surface-treated Al2O3/GaN metaloxidesemiconductor structures
We show the effect of surface treatment between the Al2O3 and the recess-etched GaN. We have investigated the effect of TMAH surface treatment. The CV characteristics were improved with the surface treatment. We result low effective oxide charge and interface trap density. We result less charge trapping in the gate dielectric.
al2o3 gan tmah cv mos