Figure 4From: Graphitic carbon growth on crystalline and amorphous oxide substrates using molecular beam epitaxy C1s XPS spectra of graphitic carbon on SiO 2 . The dashed line is a fit with four Lorentzians. The two strongest peaks (centered at 284.6 eV and 285.8 eV) are assigned to sp 2 and sp 3 hybridized carbon atoms, respectively.Back to article page