Table 1

The four methods of graphene synthesis.

Method Quality Area
Mechanical exfoliation of highly ordered pyrolytic graphite (HOPG) Very high Small
Epitaxial growth of graphene on silicon carbide (SiC) Medium Large (3–4 inches wafers)
Reduction of graphene oxide (rGO) Medium Large
Chemical vapor deposition (CVD) High Very large (30 inches)

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