Dresden 2011 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 73: [DS] Organic Electronics and Photovoltaics III (jointly with CPP, HL, and O)
O 73.5: 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.