Enhancement of the photoelectric performance of dye-sensitized solar cells using Ag-doped TiO 2 nanofibers in a TiO 2 film as electrode

Abstract

For high solar conversion efficiency of dye-sensitized solar cells [DSSCs], TiO 2 nanofiber [TN] and Ag-doped TiO 2 nanofiber [ATN] have been extended to be included in TiO 2 films to increase the amount of dye loading for a higher short-circuit current. The ATN was used on affected DSSCs to increase the open circuit voltage. This process had enhanced the exit in dye molecules which were rapidly split into electrons, and the DSSCs with ATN stop the recombination of the electronic process. The conversion efficiency of TiO 2 photoelectrode-based DSSCs was 4.74%; it was increased to 6.13% after adding 5 wt.% ATN into TiO 2 films. The electron lifetime of DSSCs with ATN increased from 0.29 to 0.34 s and that electron recombination was reduced. © 2012 Jin et al.