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Charge transport in p-conjugated systems
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Computational Physics .
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Computational Physics .
2003 (English)In: Synthetic metals, ISSN 0379-6779, E-ISSN 1879-3290, Vol. 137, no 1-3, 1397-1399 p.Conference paper, Published paper (Other academic)
Abstract [en]

The effects on charge transport of inter chain interactions in conjugated polymers and inter shell interactions in multi-wall carbon nanotubes is studied theoretically. In the case of conjugated polymers the charge carriers are polarons, which in regions of well ordered chains extend over several such chains. When an external electric field is applied, the polarons drift rapidly through these regions. The disordered regions, however, act as barriers for charge transport and a fairly strong field is needed for the polaron to hop across these regions. Although the inter shell orbital overlap in multi-wall carbon nanotubes is larger than between polymer chains, the effective interaction is weak and the current through a multi-wall carbon nanotube is dominated by the transport along a single shell.

Place, publisher, year, edition, pages
2003. Vol. 137, no 1-3, 1397-1399 p.
Keyword [en]
Ballistic transport, Charge transport, Conjugated polymers, Multi-wall carbon nanotube, Polaron drift
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-46674DOI: 10.1016/S0379-6779(02)01158-XOAI: oai:DiVA.org:liu-46674DiVA: diva2:267570
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-13

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Stafström, SvenHansson, Anders

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