Scanning-tunneling spectroscopy on conjugated polymer films

M. Kemerink, S.F. Alvarado, P.M. Koenraad, R.A.J. Janssen, H.W.M. Salemink, J.H. Wolter

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review


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.
Original languageEnglish
Title of host publicationOrganic and polymeric materials and devices : symposium held April 22 - 25, 2003, San Francisco, California, U.S.A.
EditorsP.W.M. Blom
Place of PublicationWarrendale
PublisherMaterials Research Society
ISBN (Print)1-558-99708-3
Publication statusPublished - 2003
Event2003 MRS Spring Meeting & Exhibit - San Francisco, United States
Duration: 21 Apr 200325 Apr 2003

Publication series

NameMaterials Research Society conference proceedings
ISSN (Print)0886-7860


Conference2003 MRS Spring Meeting & Exhibit
Country/TerritoryUnited States
CitySan Francisco
OtherSymposium held at the 2003 MRS Spring Meeting
Internet address


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