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

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer 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.
Originele taal-2Engels
TitelOrganic and polymeric materials and devices : symposium held April 22 - 25, 2003, San Francisco, California, U.S.A.
RedacteurenP.W.M. Blom
Plaats van productieWarrendale
UitgeverijMaterials Research Society
ISBN van geprinte versie1-558-99708-3
StatusGepubliceerd - 2003
EvenementOrganic and Polymeric Materials and Devices, April 22-25, 2003, San Francisco, CA, USA - San Francisco, CA, Verenigde Staten van Amerika
Duur: 21 apr 200325 apr 2003

Publicatie series

NaamMaterials Research Society conference proceedings
ISSN van geprinte versie0886-7860


CongresOrganic and Polymeric Materials and Devices, April 22-25, 2003, San Francisco, CA, USA
LandVerenigde Staten van Amerika
StadSan Francisco, CA
Ander2003 MRS Spring meeting

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