Improved Hole Injection in Bulk Heterojunction (BHJ) Hybrid Solar Cells by Applying a Thermally Reduced Graphene Oxide Buffer Layer

Figure 8

- curves of typical hybrid solar cell devices based on three different reduction conditions for the rGO buffer layer: (a) rGO^a: thermal reduction in air, (b) rGO^b: thermal reduction in a nitrogen atmosphere, and (c) rGO^c: a combination of chemical and thermal reduction.