Figure 3 | Scientific Reports

Figure 3

From: Single-step fabrication and work function engineering of Langmuir-Blodgett assembled few-layer graphene films with Li and Au salts

Figure 3

(a) Raman spectra of the undoped LPE GS film and films doped with Li and Au salts, (b) FWHM of the four basic Raman peaks (c)The intensity ratio of D to G peak for different doping metal salts, I(D)/I(G), (d) The intensity ratio of D to D’ peak, I(D)/I(D’), for different doping metal salts. We refer to peak intensity as the height of the peaks as proposed by Eckmann et al.32.

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