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

Table 1

The arithmetic average () and root mean square values () determined from AFM measurements of ITO, ITO/MWCNT, and ITO/rGO samples.

	Surface roughness (nm)	Surface roughness (nm)
ITO	2.82	3.51
ITO/MWCNT	5.33	7.39
ITO/rGO	2.92	3.68