Dye-sensitized solar cells (DSCs) are an emerging technology for the conversion of solar photons to electrical energy. Typical DSCs are based upon ruthenium complexes which act as photosensitizers for a wide band-gap semiconductor such as titanium dioxide. The low abundance of ruthenium raises issues about the sustainability of such devices. We now present promising prototype DSCs based upon copper(I) complexes.
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Rendondo et al. (2009) studied this question.