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Efficient Methano[70]fullerene/MDMO‐PPV Bulk Heterojunction Photovoltaic Cells
Author(s) -
Wienk Martijn M.,
Kroon Jan M.,
Verhees Wiljan J. H.,
Knol Joop,
Hummelen Jan C.,
van Hal Paul A.,
Janssen René A. J.
Publication year - 2003
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200351647
Subject(s) - fullerene , photoexcitation , photocurrent , photovoltaic system , materials science , optoelectronics , heterojunction , polymer , absorption (acoustics) , acceptor , photochemistry , nanotechnology , chemistry , physics , excitation , organic chemistry , ecology , quantum mechanics , composite material , biology , condensed matter physics
Owing to their increased absorption of light in the visible region, [70]fullerene derivatives provide a high photocurrent when incorporated as the electron acceptor in thin‐film polymer photovoltaic cells. An incident‐photon‐to‐current efficiency of 66 % is obtained when [70]PCBM (see picture) is used in combination with a poly( p ‐phenylene vinylene). These high currents originate from an ultrafast charge transfer that occurs upon photoexcitation of either the fullerene or the polymer.