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DS: Dünne Schichten

DS 24: Poster

DS 24.44: Poster

Tuesday, March 25, 2003, 14:30–17:00, P2a

Analysis of induvidial PTCDA organic molecules on Si(111)-7x7 — •Nicoleta Nicoara¹, J.M. Gómez-Rodríguez¹, Javier Méndez¹, Bernadett Szücs², Zoltán Hajnal², and Thomas Frauenheim² — ¹Universidad Autónoma de Madrid, 28049, Spain — ²University of Paderborn, 33098, Germany

Scanning tunneling microscopy has been performed to study the adsorption of individual PTCDA (3,4,9,10-perylene tetracarboxylic-dianhydride) molecules on Si(111)-(7x7) surfaces. The molecular orientation, intramolecular features and bias dependency of the molecule adsorbed at the corner holes site are discussed. The isolated molecule and the adsorption at this specific site is analyzed using a Density-Functional theory based Tight Binding (DFTB) method.