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Charge carrier dynamics in alternating polyfluorene copolymer: Fullerene blends probed by terahertz spectroscopy
Nemec, H., Department of Chemical Physics, Lund University, Getingevdgen 60, 222 41 Lund, Sweden.
Institute for Atomic and Molecular Physics, Kruislaan 407, 1098SJ Amsterdam, Netherlands.
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics .
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics .
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2008 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, Vol. 112, no 16, 6558-6563 p.Article in journal (Refereed) Published
Abstract [en]

Time-resolved terahertz spectroscopy is used for investigation of photoinduced charge carrier dynamics in blends of a polyfluorene copolymer (poly[2,7-(9,9-dioctyl-fluorene)-alt-5,5-(4',7'-di-2-thienyl- 2',1',3-benzo-thiadiazole)]) and an electron acceptor ([6,6]-phenyl-C61-butyric acid methyl ester). The transient far-infrared response appears instantaneously after photoexcitation. We show that the transient conductivity spectrum is dominated by two major contributions: response of separated charge carriers and response of coupled polaron pairs. © 2008 American Chemical Society.

Place, publisher, year, edition, pages
2008. Vol. 112, no 16, 6558-6563 p.
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Engineering and Technology
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URN: urn:nbn:se:liu:diva-46388DOI: 10.1021/jp710184rOAI: oai:DiVA.org:liu-46388DiVA: diva2:267284
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2011-01-10

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Zhang, FenglingInganäs, Olle

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