Figure 7
Uncorrected Raman spectrum extracted from the Raman mapping that corresponds to one of the blue point in the G band intensity map. The first-order Raman scattering of SiC correspond to the bands at 764, 786, and 964 cm-1. Its second overtone falls between 1400 and 2000 cm-1 with the sharp G band around 1590 cm-1. The 2D band is around 2780 cm-1. No D band can be seen on this point. The sharp and intense band around 532 cm-1 correspond to a crystalline Si cluster that is highly compressively stressed by the SiC substrate.