Figure 1

Micro-Raman scanning images with an area of 5 × 5 measured from the graphene/GaN hybrid structure.

(a) Integrated from the intensity of 2D Raman mode of graphene. (b) Integrated from the intensity of Raman mode of GaN. (c) and (d) Representative Raman spectra extracted from 1(a) and 1(b), respectively.