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On the Efficiency of Charge Transfer State Splitting in Polymer:Fullerene Solar Cells
Author(s) -
Albrecht Steve,
Vandewal Koen,
Tumbleston John R.,
Fischer Florian S. U.,
Douglas Jessica D.,
Fréchet Jean M. J.,
Ludwigs Sabine,
Ade Harald,
Salleo Alberto,
Neher Dieter
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201305283
Subject(s) - fullerene , materials science , excitation , charge (physics) , band gap , charge carrier , polymer , organic solar cell , chemical physics , molecular physics , atomic physics , optoelectronics , physics , composite material , quantum mechanics
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.