A 4 % Efficient Dye-Sensitized Solar Cell Fabricated from Cathodically Electrosynthesized Composite Titania Films


  • K. R. and S. H. thank the U.S. Department of Energy (Office of Basic Energy Sciences) and the Japanese Government (Priority Areas 417-MEXT), respectively, for partial funding support. R. S. thanks M. Kinoshita and N. Wakayama for technical assistance.


Cathodically electrosynthesized TiO2 films (see Figure) containing occluded Degussa P-25 titania particles can yield short-circuit current densities as high as 10.5 mA cm–2, an open-circuit photovoltage of 690 mV, a fill factor of 57.3 %, and a photovoltaic efficiency of 4.13 % under simulated air mass 1.5 (100 mW cm–2) sunlight in a dye-sensitized solar cell device.