Dye-sensitized solar cells (DSSCs) made from mesoporous TiO2 electrodes have been intensely investigated as a promising candidate for low-cost, lightweight, and scalable solar cells.[1] To date, the highest conversion efficiencies above 11% have been achieved with panchromatic polypyridylruthenium complex sensitizers.[2] The high efficiency of the ruthenium complexes can be attributed to their wide absorption range from the visible to ...