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Scanning-tunneling spectroscopy on conjugated polymer flims
Linköping University, Department of Physics, Chemistry and Biology, Chemical and Optical Sensor Systems. Linköping University, The Institute of Technology.ORCID iD: 0000-0002-7104-7127
Eindhoven University of Technology, Netherlands.
Eindhoven University of Technology, Netherlands.
Eindhoven University of Technology, Netherlands.
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2003 (English)In: ORGANIC AND POLYMERIC MATERIALS AND DEVICES, MATERIALS RESEARCH SOCIETY , 2003, Vol. 771, 49-54 p.Conference paper (Refereed)
Abstract [en]

Scanning-tunneling spectroscopy experiments have been performed on conjugated polymer films and have been compared to a three-dimensional numerical model for charge injection and transport. It is found that field enhancement near the tip apex leads to significant changes in the injected current, which can amount to more than an order of magnitude, and can even change the polarity of the dominant charge carrier. As a direct consequence, the single-particle band gap and band alignment of the organic material can be directly obtained from tip height-voltage (z-V) curves, provided that the tip has a sufficiently sharp apex.

Place, publisher, year, edition, pages
MATERIALS RESEARCH SOCIETY , 2003. Vol. 771, 49-54 p.
National Category
Physical Sciences
URN: urn:nbn:se:liu:diva-118219ISI: 000185782000008ISBN: 1-55899-708-3OAI: diva2:813328
Symposium on Organic and Polymeric Materials and Devices held at the 2003 MRS Spring Meeting
Available from: 2015-05-22 Created: 2015-05-22 Last updated: 2015-05-29

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Kemerink, Martijn
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Chemical and Optical Sensor SystemsThe Institute of Technology
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