A Review on Applications of Two-Dimensional Materials in Surface-Enhanced Raman Spectroscopy

Figure 5

(a) SERS spectra for 10⁻¹⁴M R6G on graphene hybrid system taken from three spots from the inset Raman mappings in the same color squares. The inset of panel (a) is composed of Raman intensity mapping of R6G peak at 613 cm⁻¹ (red) and Raman intensity mapping of graphene G band (green), scale bar, 2 μm. (b) Raman intensities of R6G peaks at 613 cm⁻¹ and 1187 cm⁻¹ separately as a function of graphene G band from the three spectra shown in panel (a). (c) SEM image of graphene/Au nanopyramid hybrid SERS platform, scale bar, 200 nm [20].

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