Fig. 1

Deposition and characterization of MGF. a Schematic illustration of CVD deposition of MGF with Fe³⁺ as catalyzer. b Raman spectrum of graphene film with and without catalyzer (at 633 nm excitation wavelength). c SEM image of MGF. d Photos of MGF deposited on quartz substrate with different thickness. e Comparison of the sheet resistance and transmittance of MGF with different thickness. f Comparison of the thickness and FoM of MGF obtained in this work