Fig. 5From: Design and application of carbon nanomaterials for photoactive and charge transport layers in organic solar cells a Schematic and b energy band diagrams of an indium tin oxide (ITO)/poly(3,4ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)/poly-3-hexylthiophene (P3HT):graphene quantum dots (GQDs)/Al device. Reprinted with permission from Li et al. [63], © 2011, WileyBack to article page