Flexible dye-sensitized solar cells from titanium oxide nanoparticles

Dye-sensitized solar cells were fabricated on flexible substrate from TiO₂ nanoparticles by compression at room temperature and at elevated temperature. It was found that short circuit current increases and the thickness decreases with increasing the pressure during the compression. The conversion efficiency was improved by employing hot-pressing method where the compression is done at elevated temperature. This is due to the improvement of necking between TiO₂ nanoparticles.