title: Ultrafast fluorescence studies of dye sensitized solar cells.
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.
authors.affiliation: Laboratoire de Spectroscopie Ultrarapide, Ecole Polytechnique Fédérale de Lausanne, SB-ISIC, CH-1015 Lausanne-Dorigny, Switzerland.
authors.forename: Olivier
authors.initials: O
authors.lastname: Bräm
authors.forename: Andrea
authors.initials: A
authors.lastname: Cannizzo
authors.forename: Majed
authors.initials: M
authors.lastname: Chergui