Consideration of spontaneous polarization in the problem of NH-SiC/3C-SiC/NH-SiC heterostructures formed by cubic (3C) and hexagonal (NH) silicon carbide polytypes

摘要

The problem of three-layer NH-SiC/3C-SiC/NH-SiC heterostructures was considered within the model previously proposed for describing the heterojunction between NH-SiC/3C-SiC silicon carbide polytypes, taking into account spontaneous polarization of hexagonal regions. The potential in the cubic 3C region was approximated by a model function constructed from physical considerations. Much attention was paid to the study of the effect of spontaneous polarization and the 3C region thickness on energy characteristics of quantum wells formed near heterojunctions.