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Conformation sensitive charge transport in conjugated polymers
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, The Institute of Technology.
Lund University, Sweden .
Lund University, Sweden .
2013 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 103, no 21, 213303- p.Article in journal (Refereed) Published
Abstract [en]

Temperature dependent charge carrier mobility measurements using field effect transistors and density functional theory calculations are combined to show how the conformation dependent frontier orbital delocalization influences the hole-and electron mobilities in a donor-acceptor based polymer. A conformationally sensitive lowest unoccupied molecular orbital results in an electron mobility that decreases with increasing temperature above room temperature, while a conformationally stable highest occupied molecular orbital is consistent with a conventional hole mobility behavior and also proposed to be one of the reasons for why the material works well as a hole transporter in amorphous bulk heterojunction solar cells.

Place, publisher, year, edition, pages
American Institute of Physics (AIP) , 2013. Vol. 103, no 21, 213303- p.
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-102780DOI: 10.1063/1.4832075ISI: 000327590400078OAI: diva2:683885

Funding Agencies|Swedish Energy Agency||Swedish Research Council||

Available from: 2014-01-07 Created: 2013-12-26 Last updated: 2014-02-20

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