Figure 9
(a) Image plots of O 1s and C 1s spectra acquired with photon energies of 740 eV and 390 eV, respectively, and after background removal. (b) Examples of curve fits done after averaging 50–100 individual spectra and sketches explaining how graphene is intercalated (see the text for the details of the different components). (c) Time evolution of different components obtained after binning the data eight times (points). The solid lines are averages of 20 points. |