Rough, high surface area nanocrystalline TiO2 film electrodes prepared by a doctor blade technique were successfully sensitized by light harvesting molecular antennas consisting of Ru(II) complexes with bpy and dpp ligands, bearing functional anchoring groups(-COOH). A new solid-state composite electrolyte based on polyethylene oxide (PEO) filled with titania and containing the I-/I3- red-ox couple was prepared and characterized. The efficiency of the corresponding dye-sensitized solar cells was investigated and directly compared to the performance of similar cells using the N3 dye. In the light of the obtained results, optimisation of the cell components is discussed in terms of efficiency, lifetime and stability aw well as possible practical application.
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