Chemical and electronic aspects of metal/conjugated polymer interfaces: Implications for electronic devices
1995 (English)In: Synthetic metals, ISSN 0379-6779, E-ISSN 1879-3290, Vol. 71, no 1-3, 2159-2162 p.Article in journal (Refereed) PublishedText
The chemical nature and the electronic structure of metal/conjugated polymer interfaces are investigated in the context of polymer-based light-emitting diodes. We consider the interaction of low-workfunction metals (Al, Ca) with the surface of conjugated polymers or model oligomer molecules with a combined experimental and theoretical approach. The early stages of the interface formation are followed with X-ray and ultraviolet photoelectron spectroscopies and the experimental data are compared to the results of quantum chemical calculations. The reactions of Al and Ca with the organic surface are found to be fundamentally different: while the former forms new covalent bonds onto the polymer backbone, the latter tends to dope the conjugated system. Both types of reaction are expected to modify drastically the electronic properties of the polymer semiconductor.
Place, publisher, year, edition, pages
Elsevier, 1995. Vol. 71, no 1-3, 2159-2162 p.
Chemical Sciences Physical Sciences
IdentifiersURN: urn:nbn:se:liu:diva-124177DOI: 10.1016/0379-6779(94)03203-IISI: A1995QT32600261OAI: oai:DiVA.org:liu-124177DiVA: diva2:896188
Proceedings of the International Conference on Science and Technology of Synthetic Metals (ICSM ’94), Seoul, Korea, 24–29 July 1994, Vols. 69/71