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HL: Fachverband Halbleiterphysik

HL 77: Joint Session: Organic Electronics and Photovoltaics III

HL 77.5: Vortrag

Donnerstag, 17. März 2011, 15:00–15:15, GER 38

Electronic properties of spiro-compounds: A combined photoelectron spectroscopy and energy-loss spectroscopy study — •B. Mahns¹, M. Grobosch¹, T. Saragi², J. Salbeck², and M. Knupfer¹ — ¹IFW Dresden, Helmhotzstrasse 20, 01069 Dresden, Germany — ²Macromolecular Chemistry and Molecular Materials, Institute of Chemistry, Department of Science and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Strasse 40, 34132 Kassel, Germany

The electronic properties of three different spiro-compounds have been investigated using a combination of photoelectron spectroscopy and electron energy-loss spectroscopy. The compounds are characterized by parts with different electron affinity, and we demonstrate their variation in ionization potential and optical gap. Moreover, our data give a measure of the occupied density of states as well as the dielectric properties in a wide energy range.