Figure 5 | Scientific Reports

Figure 5

From: Graphene Quantum Dot Solid Sheets: Strong blue-light-emitting & photocurrent-producing band-gap-opened nanostructures

Figure 5

Raman analysis of GQDs and GQD solid sheet structures. (a) Raman spectra of the raw samples (Z0-Z7), showing D and G bands. The D band increases with the increase of metal concentration. (b) Optical microscope image of a GQD interconnected solid sheet (Z7), (c) Raman mapping of D band, (d) Raman mapping of G band, (e) area ratio of D band to G band. It clearly shows the distribution G and D bands in whole area of the solid sheet.

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