Graphene oxide as auxiliary binder for TiO2 nanoparticle coating to more effectively fabricate dye-sensitized solar cells

► Graphene oxide is used as an auxiliary binder in TiO2 paste. ► Graphene oxide can improve the binding among the TiO2 nanoparticles. ► Graphene oxide prevents the appearance of crack on TiO2 films. ► High-quality TiO2 films can be fabricated from TiO2-GO pastes via single printing. ► Graphene oxide effectively improve the fabrication of dye-sensitized solar cells.