Figure 3: Raman spectrum of a GNR on h-BN.
From: Oriented graphene nanoribbons embedded in hexagonal boron nitride trenches
(a) AFM image of a GNR with a width of ∼15 nm. Scale bar, 30 nm; (b) Raman scattering of the GNR. The Raman spectrum of h-BN is also shown beside that of the GNR for comparison. The spectrum traces were normalized and shifted on the intensity axis for clarity. The inset shows the Raman spectrum of the GNR after subtracting the h-BN background. Because the position of the D-band of the GNR is very close to that of a prominent Raman peak of h-BN, such a subtraction could be utilized to identify the existence of weak Raman peaks. The full width at half-maximum (FWHM) for each peak is given in parentheses with the peak position. The band names of the main peaks are also indicated. The parameters of all Raman peaks were extracted via Lorentzian fitting, and the wavelength of the exciting laser was 488 nm.
