On the efficiency of charge transfer state splitting in polymer:fullerene solar cells

Steve Albrecht, Koen Vandewal*, John R. Tumbleston, Florian S.U. Fischer, Jessica D. Douglas, Jean M.J. Fréchet, Sabine Ludwigs, Harald Ade, Alberto Salleo, Dieter Neher

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    107 Scopus citations

    Abstract

    The field dependence and yield of free charge carrier generation in polymer:fullerene blends with varying energetic offsets is not affected when the excitation energy is varied from above band-gap to direct CT state excitation. Instead, the ability of the CT state to split is dictated by the energetic offset between the relaxed CT state and the charge separated (CS) state.

    Original languageEnglish (US)
    Pages (from-to)2533-2539
    Number of pages7
    JournalAdvanced Materials
    Volume26
    Issue number16
    DOIs
    StatePublished - Apr 23 2014

    Keywords

    • charge generation
    • charge transfer states
    • driving force
    • excess energy
    • geminate recombination
    • morphology
    • organic solar cells
    • spectroelectrochemistry

    ASJC Scopus subject areas

    • General Materials Science
    • Mechanics of Materials
    • Mechanical Engineering

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