Barrier Performance of CVD Graphene Films Using a Facile P3HT Thin Film Optical Transmission Test

Figure 3

(a) Schematic of a layer-by-layer transfer of monolayer graphene for enhanced barrier performance (i) P3HT/PMMA (spun-cast)/monolayer graphene, (ii) P3HT/PMMA (spun-cast)/monolayer graphene (2 layers), (iii) P3HT/PMMA (spun-cast)/monolayer graphene (3 layers), (b) P3HT degradation as a function of time indicating enhanced barrier performance by adding more layers of monolayer graphene which covers possible cracks in the monolayer graphene resulting in lower slope for the 3-layer graphene structure.

(a)

(b)