CuI versus RuII: Dye‐Sensitized Solar Cells and Beyond

Copper for the scientist cunning at his trade: RuII complexes have long played the central role in the photochemical conversion of sunlight and dye-sensitized solar cells (DSSCs). Recently, however, the first examples of DSSCs sensitized by CuI polypyridyl complexes were reported. CuI complexes have comparable photophysical and electrochemical properties to RuII complexes and offer similar function with a cheaper and more abundant metal.