The preparation of single-layer graphene by the thermal decomposition of silicon carbide (SiC) has been proposed as a viable route for the synthesis of uniform,
wafer-size graphene layers for technological applications5–7.
A considerable advantage of this method is that insulating SiC substrates can be used so that transfer to another insulator is not required.
However, the large-scale structural quality is limited at present by the lack of continuity
and uniformity of the grown film.