Abstract
In dye-sensitized solar cells (DSSC), the TiO2/dye/electrolyte interface affects the photoelectron conversion efficiency seriously because of the charge recombination reaction. In addition, hybrid semiconductor materials with match band potential are important in photoelectric applications result from suppressing photogenerated charge and hole recombination. Here, the SrTiO3/TiO2 nanocomposite was employed as the anode of a DSSC. The SrTiO3/TiO2 hybridstructure was synthesized by hydrothermal of TiO2 and Sr(OH)2 at 120°C for different reaction time. In the DSSC, the open circuit voltage increased while the short circuit photocurrent enormously decreased as SrTiO3 modified TiO2 was used as anode. Despite the suppression of charge recombination, the SrTiO3/TiO2 system could simultaneously impede the electron injection, which limited the short circuit photocurrent performance. The reaction details of light harvesting efficiency, charge injection efficiency and charge collection efficiency were studied