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Keywords:

  • dye-sensitized solar cells;
  • light scattering;
  • mesoporous materials;
  • nanostructures;
  • photovoltaic effect
Thumbnail image of graphical abstract

Here comes the sun: A conversion efficiency as high as 5.4 % has been achieved on dye-sensitized ZnO solar cells with photoelectrode films consisting of polydisperse aggregates, compared to 2.4 % for the films with only nanosized crystallites. The aggregation of nanocrystallites with a broad size distribution is effective in enhancing the light-harvesting efficiency by inducing light scattering within the photoelectrode films.