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Keywords:

  • conversion luminescence;
  • dye-sensitized solar cells;
  • p-type doping;
  • rare-earth ions
Thumbnail image of graphical abstract

Y0.78Yb0.20Er0.02F3 is introduced into the TiO2 photoanode in a dye-sensitized solar cell (DSSC). Y0.78Yb0.20Er0.02F3 improves infrared light harvesting via up-conversion luminescence and thus increases the photocurrent. Yb3+/Er3+ elevates the energy level of the TiO2 electrode and thus increases the photovoltage.