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Formation of the interfacial dipole at organic-organic interfaces: C 60/polymer interfaces
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Surface Physics and Chemistry .
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Surface Physics and Chemistry .
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Surface Physics and Chemistry .
2007 (English)In: Advanced Materials, ISSN 0935-9648, E-ISSN 1521-4095, Vol. 19, no 23, 4213-4217 p.Article in journal (Refereed) Published
Abstract [en]

The energetics at organic-organic interfaces comprising a thin film of a p-conjugated polymer and an overlayer of fullerene C60 was investigated. Two different polymers, poly(3-hexylthiophene) or P3HT, a polymer with moderate electron donor character were investigated. P3HT films were spin-coated from 5 mg mL-1 and 20 mg mL solutions in dichlorobenzene on conductive substrates such as native oxide terminated silicon SiO x/Si and aluminum, cleaned in acetone and isopropyl alcohol prior to spin coating and UV ozone treated gold. The thickness of the resulting polymer films obtained from the solutions with high concentrations was about 20 nm and 150 nm, as determined from reflectance ellipsometry. The results suggested that integer charge transfer provides a comprehensive description of energy level alignment at interfaces of organic semiconductors.

Place, publisher, year, edition, pages
2007. Vol. 19, no 23, 4213-4217 p.
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Engineering and Technology
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URN: urn:nbn:se:liu:diva-47388DOI: 10.1002/adma.200700622OAI: oai:DiVA.org:liu-47388DiVA: diva2:268284
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-13

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Osikowicz, Wojciechde Jong, Michel PSalaneck, William R

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