Patent ID: 8513676
Filing Date: 2013-08-20
Classification: H01L

Abstract:
1. A semiconductor device comprising: a substrate made of silicon carbide and having a main surface having an off angle of not less than −3° and not more than +5° relative to a (0-33-8) plane in a <01-10> direction; a semiconductor layer made of silicon carbide and formed on said main surface of said substrate by means of epitaxial growth; and an insulating film formed in contact with a surface of said semiconductor layer, a maximum value of nitrogen atom concentration being 1×10 said semiconductor layer being made of silicon carbide of 4H type, and when photoluminescence measurement is performed for said semiconductor layer, a ratio of strength of a peak appearing in a wavelength of around 500 nm to strength of a peak appearing in a wavelength of around 390 nm being 0.1 or smaller.