Dresden 2014 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 43: Poster II: Organic thin films; Atomic layer deposition, Thin film characterization: Structure analysis and composition (XRD, TEM, XPS, SIMS, RBS, ...)

DS 43.9: Poster

Donnerstag, 3. April 2014, 16:00–19:00, P1

AlClPc on silver: Influence of substrate surface. — •Małgorzata Polek¹, Tamara V. Basova², Fotini Petraki¹, Florian Latteyer¹, Heiko Peisert¹, and Thomas Chassé¹ — ¹University of Tuebingen, Institute of Physical and Theoretical Chemistry, Auf der Morgenstelle 18, 72076 Tuebingen, Germany — ²Nikolaev Institute of Inorganic Chemistry, Lavrentiev Pr. 3, Novosibirsk, 630090, Russia

Phthalocyanines (Pcs) are promising materials for various applications such as organic solar cells, field effect transistors and light emmitting diodes. To improve the efficiency of the aforementioned opto-electronic devices, one needs to adjust the properties and understand better the interactions between the building blocks. Due to its permanent dipole moment and the chemical reactivity, AlClPc is in particular suited for the tuning of the interface properties. We investigated electronic properties and chemical interactions of AlClPc with polycrystalline Ag foil and Ag(100) using photoelectron spectroscopy (XPS, UPS) and low energy electron diffraction (LEED). Clear indications for a chemical interactions were found for both substrates. In addition, charge transfer processes to the macrocycle of the Pc were observed, indicated by the appearance of an interface-related peak at E_F, which can be explained as a partial filling of the former LUMO at the interface.