Effects of gamma-ray irradiation on cubic silicon carbide metal-oxide-semiconductor structure

Abstract
Radiation effects on cubic silicon carbide (3C‐SiC) metal‐oxide‐semiconductor (MOS) structures have been studied with high‐frequency capacitance‐voltage measurements. It was found that interface traps are generated at the 3C‐SiC/SiO2 interface and oxide‐trapped charges are built up in the oxide by 60Co gamma‐ray irradiation. The generation of the interface traps and the oxide‐trapped charges are affected by bias polarity applied to the gate electrode during the irradiation. Absorbed dose dependencies of their generation are discussed comparing with those of Si MOS structures.