Charge carrier dynamics in alternating polyfluorene copolymer: Fullerene blends probed by terahertz spectroscopy
2008 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, Vol. 112, no 16, 6558-6563 p.Article in journal (Refereed) Published
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.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-46388DOI: 10.1021/jp710184rOAI: oai:DiVA.org:liu-46388DiVA: diva2:267284