Berlin 2012 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 24: Poster: Organic Semiconductors
CPP 24.18: Poster
Mittwoch, 28. März 2012, 11:00–13:00, Poster A
Change of unit cell during the growth of Diindenoperylene (DIP) on polycrystalline gold followed by Grazing Incidence X-ray Diffraction — •Sebastian Bommel1,2, Christopher Weber2, Peter Schäfer2, and Stefan Kowarik2 — 1HASYLAB at DESY, Notkestr. 85, 22607 Hamburg, Germany — 2Institut für Physik, Humboldt-Universität zu Berlin, Newtonstr. 15, 12489 Berlin, Germany
Organic-inorganic semiconductor hybrid-structures are promising candidates for applications in opto-electronics, photovoltaics and sensing. The molecular structure at the organic-inorganic interface is crucial for the effectiveness of such devices. Here we report results of real-time and in situ grazing incidence X-Ray diffraction (GIXD) measurements for growth of the organic semiconductor diindenoperylene (DIP) on polycrystalline gold. By monitoring the evolution of unit cell we find that the cell parameters a, b, c and the angle beta change during growth. These unit cell changes are a strong indication of a change in molecular tilt for the molecular layers adjacent to the gold surface.