Stable New Sensitizer with Improved Light Harvesting for Nanocrystalline Dye-Sensitized Solar Cells


  • The present work is supported by the Swiss Science Foundation, the Swiss Federal Office for Energy (OFEN), and the European Office of U.S. Air Force under Contract No. F61775-00-C0003. V. A. and A. H. would like to thank the Swedish Foundation for Strategic Environmental Research (MISTRA) and the Swedish National Energy Administration for financial support. We thank M. Jirousek, R. Charvet, P. Liska, and T. Sekiguchi for helpful discussions.


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A new heteroleptic polypyridyl ruthenium complex (see Figure) with a high molar extinction coefficient has been synthesized. The complex is demonstrated to be a highly efficient, stable sensitizer for nanocrystalline dye-sensitized solar cells. For a newly developed dye, the achievement of 10.2 % power conversion efficiency is very encouraging.