DPG Phi
Verhandlungen
Verhandlungen
DPG

Berlin 2005 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

O: Oberflächenphysik

O 45: Organische Dünnschichten IV

O 45.7: Vortrag

Dienstag, 8. März 2005, 17:15–17:30, TU EB301

Tetracene and pentacene growth on Ag(111) — •Moritz Sokolowski1, Andreas Langner1, Annegret Hauschild1, Russlan Temirov2, Stefan Tautz2, Maxim Eremtchenko 3, D. Bauer3, and Jürgen-A. Schaefer31Institut für Physikalische und Theoretische Chemie der Universität Bonn — 2School of Engineering and Science, International University Bremen — 3Institut für Physik und Zentrum für Mikro- und Nanotechnologien, Technische Universität Ilmenau

The growth of the two polyacenes tetracene (Tc) and pentacene (Pc) on Ag(111) was investigated by SPA-LEED, STM, HREELS, XPS, and TPD. Although the two molecules are chemically similar, their growth behaviour on Ag(111) turns out to be significantly different. Tc forms two long-range ordered monolayer structures at temperatures below 230 K, which contain one (planar) and two (slighly tilted) Tc molecules per unit cell, respectively [1]. From the second layer onward, a pronounced cluster-growth occurs. Quite differently, the monolayer of Pc appears to be disordered, possibly due to kinetic limitations. Interestingly, the second layer exhibits a long range ordered structure, whereby the growth directions are templated by surface steps. Supported by the DFG. [1] A. Langner et al., Surf. Science (2004), in press.

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2005 > Berlin