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Verhandlungen
Verhandlungen
DPG

Berlin 2012 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 58: Poster Session III (Solid/liquid interfaces; Metals; Semiconductors; Oxides and insulators)

O 58.39: Poster

Mittwoch, 28. März 2012, 18:15–21:45, Poster B

Ultrathin films of NTCDA on Ag(111): Growth and thermal evolution beyond the monolayer — •Carolin R. Braatz, Gregor Öhl, and Peter Jakob — Fachbereich Physik, Philipps- Universität Marburg

The growth of well defined thin films of large organic molecules using molecular deposition techniques depends critically on the structural properties of the substrate and/or the contact layer between organic film and the substrate. A comprehensive characterization of these is therefore vital to arrive at an improved understanding of the growth mechanisms of organic layers with destined properties. In this contribution the growth and the thermal evolution of NTCDA layers on Ag(111) have been studied in the temperature range 80−550 K using FT-IRAS, SPA-LEED, and TPD. Particular attention is devoted to phase transformations of monolayer and bilayer NTCDA/Ag(111) under different growth conditions and their effect on the initial growth of multilayer films. The potential of IRAS as an in-situ analytical technique to characterize organic film growth is discussed.

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