Adsorption of PTCDA on a partially KBr covered Ag(111) substrate

Ordered growth of 3,4,9,10-perylene-tetracarboxylic-dianhydride (PTCDA) on Ag(111) partially covered by one or two monolayers of KBr was investigated by non-contact AFM with molecular resolution. Different adsorption patterns are found on the pure substrate, the one covered by a single monolayer, an...

Full description

Saved in:
Bibliographic Details
Published inNanotechnology Vol. 17; no. 6; pp. 1568 - 1573
Main Authors Loppacher, Ch, Zerweck, U, Eng, L M, Gemming, S, Seifert, G, Olbrich, C, Morawetz, K, Schreiber, M
Format Journal Article
LanguageEnglish
Published England IOP Publishing 28.03.2006
Online AccessGet full text

Cover

More Information
Summary:Ordered growth of 3,4,9,10-perylene-tetracarboxylic-dianhydride (PTCDA) on Ag(111) partially covered by one or two monolayers of KBr was investigated by non-contact AFM with molecular resolution. Different adsorption patterns are found on the pure substrate, the one covered by a single monolayer, and the one covered by two monolayers KBr. Simulations with an extended Ising-type model reproduce these experimental patterns very well. The adsorbate-adsorbate and the adsorbate-substrate interaction parameters obtained from the simulation are discussed with respect to the interactions at the Ag(111)|KBr interface. As a result, alkali halide covered metals can be used for tuning the interactions and designing adsorption systems, which opens up new possibilities in the control of self-assembled nanostructures.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0957-4484
1361-6528
DOI:10.1088/0957-4484/17/6/006