Chemical and electronic aspects of metal/conjugated polymer interfaces. Implications for electronic devices
| Autor: | R. Lazzaroni, M. Lögdlund, A. Calderone, J.L. Brédas, P. Dannetun, C. Fauquet, C. Fredriksson, S. Stafström, W.R. Salaneck |
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| Rok vydání: | 1995 |
| Předmět: |
chemistry.chemical_classification
Quantitative Biology::Biomolecules Mechanical Engineering technology industry and agriculture Metals and Alloys Context (language use) Electronic structure Polymer Conjugated system Condensed Matter Physics Photochemistry Oligomer Electronic Optical and Magnetic Materials Condensed Matter::Soft Condensed Matter Metal chemistry.chemical_compound chemistry Chemical engineering Mechanics of Materials Covalent bond visual_art Materials Chemistry visual_art.visual_art_medium Molecule |
| Zdroj: | Synthetic Metals. 71:2159-2162 |
| ISSN: | 0379-6779 |
| DOI: | 10.1016/0379-6779(94)03203-i |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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