Published in

19th International Conference on Ultrafast Phenomena

DOI: 10.1364/up.2014.10.thu.e.3

19th International Conference on Ultrafast Phenomena

DOI: 10.1364/up.2014.10.thu.e.5

19th International Conference on Ultrafast Phenomena

DOI: 10.1364/up.2014.10.thu.e.4

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Coherent ultrafast charge transfer in an organic photovoltaic blend

Journal article published in 2014 by Gero Storeck, Eiji J. Takahashi, Hak Ki Yu, Alec M. Wodtke, Kaoru Yamanouchi, Tomoya Okino, Sarah Maria Falke, Max Gulde, Carlo Andrea Rozzi, Antonietta De Sio, Daniele Brida, Simon Schweda, Margherita Maiuri, Yusuke Furukawa, Margherita Maiuri Michele Amato and other authors.
This paper is available in a repository.
This paper is available in a repository.

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Abstract

Pull, pull, pulling electrons along Organic photovoltaics operate by transferring charge from a light-absorbing donor material to a nearby acceptor. Falke et al. show that molecular vibrations smooth the way for this charge transfer to proceed. A combination of ultrafast spectroscopy and theoretical simulations revealed an oscillatory signal in a model donor/acceptor blend that implicates carbon-carbon bond stretching in concert with the electronic transition. This vibrational/electronic, or vibronic, process maintains a quantum-mechanical phase relationship that guides the charge more rapidly and directly than an incoherent migration from donor to acceptor. Science , this issue p. 1001