Figure 2From: Reduction of graphene oxide by an in-situ photoelectrochemical method in a dye-sensitized solar cell assemblyDigital picture and Raman and XPS spectra. (a) Digital picture of GO and RGO, (b) Raman spectra of GO and RGO, and (c) C1s XPS spectra of GO before and (d) after reduction.Back to article page