Regensburg 2010 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 62: Poster II: Photovoltaics and Organic Semiconductors

HL 62.2: Poster

Donnerstag, 25. März 2010, 18:00–20:00, Poster D2

Inverse and direct photoemission spectroscopy measurements of inorganic-organic interfaces. — •Daniil D. Karnaushenko, Daniel Lehmann, Axel Fechner, and Dietrich R.T. Zahn — Chemnitz University of Technology, Semiconductor Physics, 09107 Chemnitz, Germany

The combination of inverse (IPES) and direct (PES) photoemission spectroscopy is a powerful approach for studying the electronic structure of surfaces and interfaces. Applied to organic materials information on the position of lowest unoccupied (LUMO) and highest occupied molecular orbital (HOMO) as well as on energy level alignment on interfacial states and dipoles can be obtained. More over the two techniques are sensitive to chemical interaction between surfaces and molecules. Here, IPES and PES measurements of several interfaces between inorganic substrate and molecules of the phthalocyanine family are presented. The dependence of the interfaces electronic and chemical structure on deposition conditions is obtained.