A　novel　concept　based　on　the　use　of　solutions　containing　already　qualified　crystalline　antimony-doped　tin　oxide　SnO2:Sb　(ATO)　nanoparticles　has　been　developed.　ATO　nanoparticles　are　decorated　by　reduced　graphene　oxide　(rGO)　through　a　hydrothermal　synthesis　method.　The　electrical　and　optical　properties　of　the　graphene　oxide　films　are　investigated　systematically.　The　sheet　resistance　(R□)　of　the　ATO–rGO　films　decreases　with　the　increase　in　the　rGO　content　in　the　precursor　solution.　The　R□　can　be　decreased　after　the　ATO–rGO　films　annealing　in　the　air　for　1 h　and　can　be　further　decreased　by　depositing　Au　on　the　surface　of　the　films.　The　optimum　property　of　the　ATO–rGO　film　shows　that　the　R□　is　80　Ω/□　and　the　transmittance　is　about　70 %.　The　ATO–rGO　films　are　used　as　the　anode　of　the　organic　solar　cells.　The　anode　film　impact　on　the　performance　of　the　devices　is　studied.　Finally,　the　power　conversion　efficiency　(PCE)　of　the　device　based　on　the　poly-(3-hexylthiophene):　[6,　6]-phenyl　C61-butyric　acid　methyl　ester　(PCBM)　blended　is　1.85 %,　and　the　PCE　of　the　device　based　on　the　poly-benzo[1,2-b:4,5-b′]　dithio-phene　thieno[3,4-b]　thiophene:PCBM　blended　is　3.4 %.　©　2014,　Springer-Verlag　Berlin　Heidelberg.