Ultrafast fluorescence studies of dye sensitized solar cells |
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Authors: | Bräm Olivier Cannizzo Andrea Chergui Majed |
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Institution: | Laboratoire de Spectroscopie Ultrarapide, Ecole Polytechnique Fédérale de Lausanne, SB-ISIC, CH-1015 Lausanne-Dorigny, Switzerland. |
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Abstract: | Time-resolved fluorescence spectra from the RuN719 dye exhibit very short lifetimes (<30 fs) in solutions, on non-injecting substrates and on injecting ones. This reveals <10 fs intramolecular energy redistribution competing with the injection. We conclude that injection proceeds on a sub-10 fs time scale from non-thermalized levels of the dye. |
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