BaTiO3 photoelectrodes for CdS quantum dot sensitized solar cells

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.