The Electronic Role of the TiO2 Light-Scattering Layer in Dye-Sensitized Solar Cells

  title={The Electronic Role of the TiO2 Light-Scattering Layer in Dye-Sensitized Solar Cells},
  author={Zhipan Zhang and Seigo Ito and Brian C O'Regan and Da Kuang and Shaik Mohammed Zakeeruddin and Paul Liska and Rapha{\"e}l Charvet and Pascal Comte and Mohammad Khaja Nazeeruddin and P{\'e}ter P{\'e}chy and Robin A. Humphry-Baker and Tsuguo Koyanagi and Takaki Mizuno and Michael Gr{\"a}tzel},
  journal={Zeitschrift f{\"u}r Physikalische Chemie},
  pages={319 - 327}
Dye-sensitized solar cells have been fabricated with different kinds of TiO2 films including SiO2 coated and bare TiO2 microparticles as light-scattering layer (LSL). Results show that the LSL barely affects the cell's dark current, whereas under illumination, it made a significant contribution to the total photocurrent. Photo-voltage decay measurements performed under bias illumination show the density of electronic states (DOS) of the LSL to be two times smaller than that of a transparent… 

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