Heteroepitaxial growth of SiC polytypes

Abstract
Heteroepitaxial growth of SiC polytypes, 3C- and 6H-SiC, has been studied by chemical vapor deposition. Raman spectra were used to identify the polytypes. 3C-SiC and 6H-SiC were grown on 6H-SiC at low (1330–1500 °C) and high temperatures (1700–1800 °C), respectively. On the other hand, on 3C-SiC, only 3C-SiC was grown at all the temperatures. 3C-SiC epilayers grown at high temperatures have smooth surfaces and good electrical properties compared with those grown at low temperatures.