Novel Tailor-made Hole-Conducting Co-adsorbents for Highly Efficient Dye-Sensitized Solar Cells

摘要

Since O’Regan and Grätzel reported high solar-cell performances for dye-sensitized solar cells (DSSCs) based on polypyridyl ruthenium(II) complex dyes adsorbed on a nanocrystalline n-type semiconductor TiO2 electrode in 1991,1 DSSCs have received considerable attention as a new generation of sustainable photovoltaic devices because of their high incident-solar-light-to-electricity conversion efficiency, colorful and decorative natures, and low cost of production.2 Up to now, power conversion efficiencies greater than 12% have been reported for DSSCs based on nanoporous TiO2 electrodes, co-sensitization of YD2-o-C8/Y123 sensitizers, and a Co-complex redox system.