Figure 3: Raman studies for graphene layer stacking order.
From: Observation of the intrinsic bandgap behaviour in as-grown epitaxial twisted graphene
Raman spectra of TD template (blue colour in a) and C60/TD FLG sample (red colour in a). inset) spectrum with SiC signal subtracted. 2D band of TD template has two Lorentzian components (black coloured curves), indicating Bernal stacking structure. (b) C60/TD FLG spectrum is composed of a single Lorentzian peak, indicating non-Bernal-stacked structure. Inset) spectrum with SiC signal subtracted. (c,d) Variation of Raman C60/GF FLG spectra as a function of C60 deposition time. A single Lorentzian 2D band was observed for all samples studied. Black solid curves represent the fitted curve. (e) Comparison of GF template before and after thermal annealing for 30 min at 1,400 °C. Inset) curve fitting of 2D band of GF template sample.
