Nonequilibrium characteristics of the gate-controlled diode in 6H-SiC

Abstract
N+‐P gate‐controlled diodes are fabricated in the wide band gap semiconductor 6H‐SiC by thermal oxidation and ion implantation of nitrogen. Room temperature capacitance‐voltage characteristics display a ‘‘hook and ledge’’ hysteresis, which has been observed in Si gate‐controlled diodes at 77 K. In these samples of p‐type doping 2.8×1016 cm−3, the surface state density is about 4×1012 cm−2.