Evaluation of InSb MOS Structure with Thin Anodic Oxide

Abstract
Interface and electrical properties of thin anodic oxide of InSb with a thickness of 330 Å are described. The thin anodic oxide has about one order of magnitude smaller interface state densities than thick anodic oxide. Electrical insulation is excellent at 77 K and even at room temperature. A flat band voltage shift of C-V curve is small for the maximum fabrication process temperature of 120°C and drastically increases even for annealing in H2 gas at 200°C.