Enhancement of Photocurrent in Dye-Sensitized Solar Cells Using Bismuth Doped TiO2- Graphene as a Hot Carrier Transport

Enhancement of Photocurrent in Dye-Sensitized Solar Cells Using Bismuth Doped TiO2- Graphene as a Hot Carrier Transport

Dye-sensitized solar cells (DSSCs) are of tremendous current interest, but they suffer from a lack of ability to harness the majority of visible light, or require heavy metal addition such as Pb or Cd which are not considered environmentally friendly. By decorating doped metal oxides such as titania with earth abundant and friendly metals on functionalized graphene sheets (FGSs), functional mats are enabled for enhanced light harvesting. In this work, novel highly crystalline bismuth doped TiO₂ nanocrystals were prepared successfully by a facile sol-gel hydrothermal process and attached to FGS’s to make functional catalyst mats.