Efficient Methano[70]fullerene/MDMO-PPV Bulk Heterojunction Photovoltaic Cells

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 us...

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Published inAngewandte Chemie International Edition Vol. 42; no. 29; pp. 3371 - 3375
Main Authors Wienk, Martijn M., Kroon, Jan M., Verhees, Wiljan J. H., Knol, Joop, Hummelen, Jan C., van Hal, Paul A., Janssen, René A. J.
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 28.07.2003
WILEY‐VCH Verlag
Wiley
Subjects
charge transfer
Chemistry
Chemistry, Multidisciplinary
fullerenes
Physical Sciences
polymers
Science & Technology
solar cells
time-resolved spectroscopy
time-resolved spectroscopy
PHOTOINDUCED ELECTRON-TRANSFER
POLYMER
PLASTIC SOLAR-CELLS
fullerenes
polymers
solar cells
PHOTOPHYSICAL PROPERTIES
DERIVATIVES
charge transfer
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Summary: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.
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We thank Sjoerd Veenstra (ECN) for useful discussions, Pascal Jonkheijm (Eindhoven University) for AFM measurements, Jörgen Sweelssen (TNO Industries, Eindhoven) for the polymer synthesis and Patrick van't Hof and Jan Alma (Groningen University) for repeating the [70]PCBM synthesis. These investigations were financially supported by the Dutch Ministries of EZ, O&W, and VROM through the EET program (EETK97115).
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ISSN:1433-7851
1521-3773
DOI:10.1002/anie.200351647