BaTiO3 photoelectrodes for CdS quantum dot sensitized solar cells

Abstract

For the first time, layers of nano-sized perovskite BaTiO₃ particles were successfully applied as photoelectrodes for making CdS quantum dot sensitized solar cells (QDSSC). The optical and electrochemical properties of BaTiO₃ on FTO glass substrates were studied. The performance of cells was maximized by controlling growth cycles of CdS and surface passivation of BaTiO₃ films. The encouraging power conversion efficiency (PCE) of 1.51% achieved points to the potential of using perovskites for sensitization and co-sensitization applications in third generation solar cells. It agrees well with the recent trend of finding more compatible and stable perovskites for applications in mesoscopic sensitized solar cells.