Change search
ReferencesLink to record
Permanent link

Direct link
STM study of PTCDA on Sn/Si(111)-2 root 3 x 2 root 3
Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering. (Materialvetenskap)ORCID iD: 0000-0003-4165-1515
Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering. (Materialvetenskap)
2016 (English)In: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 144, no 12, 124701Article in journal (Refereed) PublishedText
Abstract [en]

The electronic structures of perylene tetracarboxylic dianhydride on Sn/Si(111)-2 root 3 x 2 root 3 have been studied by scanning tunneling microscopy and spectroscopy. Individual molecules have been investigated at 0.15 ML, while at 0.3 ML molecules formed short rods. At 0.6 ML, the molecular rods interacted with each other, coupling with the substrate and forming a new 4 root 3 x 2 root 3 super structure. At 0.9 ML, the surface was further reconstructed and consisted of strips with two and three rods of molecules. We found that these surface structures are strongly modified by the molecule/substrate and the intermolecular interactions. As a result, the HOMO-LUMO gaps of these molecules change with respect to the phases and the thickness. For a single molecular layer of the 4 root 3 x 2 root 3 phase, the HOMO-LUMO levels were split with a gap of approximately 2.1 eV, which is caused by charge transfer from the substrate to the molecules. (C) 2016 AIP Publishing LLC.

Place, publisher, year, edition, pages
2016. Vol. 144, no 12, 124701
National Category
Physical Sciences
Research subject
Physics
Identifiers
URN: urn:nbn:se:kau:diva-42026DOI: 10.1063/1.4944389ISI: 000373644400052PubMedID: 27036469OAI: oai:DiVA.org:kau-42026DiVA: diva2:927957
Available from: 2016-05-13 Created: 2016-05-13 Last updated: 2016-07-07Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textPubMed

Search in DiVA

By author/editor
Zhang, HanminJohansson, Lars
By organisation
Department of Physics and Electrical Engineering
In the same journal
Journal of Chemical Physics
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 71 hits
ReferencesLink to record
Permanent link

Direct link