Tuning the Photoluminescence of Graphene Quantum Dots by Fluorination

Figure 2

(a) XPS full spectra of GQDs and F-GQDs. High-resolution C 1s spectra of (b) GQDs and (c) F-GQDs. (d) High-resolution F 1s XPS spectrum of F-GQDs.

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(b)

(c)

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