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Electronic structur...
Electronic structure of PTCDA on Sn/Si(111)-2√3×2√3
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- Zhang, Hanmin, 1966- (författare)
- Karlstads universitet,Institutionen för ingenjörsvetenskap och fysik (from 2013),material physics
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- Johansson, Lars, 1956- (författare)
- Karlstads universitet,Institutionen för ingenjörsvetenskap och fysik (from 2013),Materials Science
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(creator_code:org_t)
- Elsevier, 2014
- 2014
- Engelska.
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Ingår i: Chemical Physics. - : Elsevier. - 0301-0104 .- 1873-4421. ; 439, s. 71-78
- Relaterad länk:
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http://www.sciencedi...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The electronic structures of PTCDA on the Sn/Si(111)-2√3×2√3 surface have been thoroughly studied by high-resolution photoelectron spectroscopy and near-edge X-ray absorption fine structure (NEXAFS). Upon deposition of PTCDA, there is an unusual charge transfer from the Sn/Si(111)-2√3×2√3 surface to the molecules. This is clearly shown by a new component in the Sn 4d core-level spectra that shifts towards higher binding energy. In contrast to the literature, the charge provided by Sn is donated to the carbonyl C instead of the O atoms. This is revealed by a new component in the C 1s core-level spectra that shifts towards lower binding energy. The charge transfer causes a splitting of the HOMO level in the valence band spectra. As indicated in the NEXAFS spectra, it also induces a splitting of the LUMO level of the molecules. For thick films the NEXAFS results suggest a layer by layer growth mode.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- PTCDA
- XPS
- NEXAFS
- Electronic structure
- Molecule-induced reconstruction
- Metal/semiconductor surface
- Physics
- Fysik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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