Gold Nanoparticle-Graphene Oxide Nanocomposites That Enhance the Device Performance of Polymer Solar Cells

Figure 4

AFM topographic images of (a) GO, (b) AuNP-GO/GL, and (c) AuNP-GO/SC on SiO₂ substrates. The bottom figures display the corresponding AFM height profiles. Vertical distances between the markers are noted in the height diagrams.

(a)

(b)

(c)