A PEO/PVDF Solid-state Redox Electrolyte Hybrid with TiO_2 Nanoparticles for Dye-sensitized Nanocrystalline Solar Cell

摘要

A high efficiency all solid-state dye-sensitized nanocrystalline solar cell is fabricated with the PEO/PVDF/TiO_2 nanoparti-cles polymer redox electrolyte, which yields an overall energy conversion efficiency about 4.8% under irradiation of white light (65.2mW·cm~(-2)). The introduction of PVDF containing fluorine element 'F' having strong negativity and the titanium dioxide nanopar-ticles into the PEO electrolyte increases the ionic conductivity (about two orders of magnitude), effectually reduces the recombination rate at the interface of TiO_2/solid-state electrolyte and enhances the performance of solar cell.