Optical Properties of 4H, 6H, 15R, 21R, Cubic SiC

摘要

Optical absorption and reflectivity studies were carried out on a variety of cubic SiC samples. Two additional indirect transitions at 3.55 eV and 4.2 eV were found. In N-type cubic SiC the interconduction band transition X(1c) to X(3c) was accurately located. Results were compared with recent band calculations of Herman, Van Dyke and Kortum. Two additional papers were prepared dealing with a general discussion of the dependence of the physical properties on polytype structure and the optical properties of polytypes of SiC. (Author)