Photoinduced transient stark spectroscopy in organic semiconductors: A method for charge mobility determination in the picosecond regime

J. Cabanillas-Gonzalez*, T. Virgili, A. Gambetta, G. Lanzani, Thomas Anthopoulos, D. M. De Leeuw

*Corresponding author for this work

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Subpicosecond photoinduced Stark spectroscopy experiments are carried out for measuring charge carrier mobility in organic semiconductors. The technique is demonstrated in state-of-art devices based on methanofullerene. The transient mobility of photogenerated charge carriers is measured in the picosecond time domain. Electric field dependent mobility is observed from the earliest time scales. In addition, two distinct transport regimes are revealed: a short-lived state, approximately 10 ps, of high mobility and a transient towards the trap limited transport, associated with the mesoscopic structure of the medium.

Original languageEnglish (US)
Article number106601
JournalPhysical Review Letters
Issue number10
StatePublished - Mar 20 2006

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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