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Proceedings Paper

Epitaxy vs. dipole assisted growth for organic oligomer nanoaggregates
Author(s): Frank Balzer; Laxman Kankate; Horst Niehus; Horst-Günter Rubahn
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Paper Abstract

Single crystalline organic nanoaggregates from organic semiconductors such as para-hexaphenyl and sexithiophene might become building blocks for a new type of organic electronic and optoelectronic devices. For the performance of such devices detailed knowledge about the mechanisms responsible for formation and for alignment of the aggregates on the growth substrate is important. On muscovite mica long, mutually parallel fibers of para-hexaphenyl grow, whereas on alkali halides mainly two different orientations, on phlogopite mica three different orientations exist. For sexithiophene on muscovite mica depending on the growth temperature either three equivalent aggregate orientations exist, or a single one dominates. The interplay between epitaxy and dipole assisted alignment on different growth substrates favors either unidirectional or multidirectional growth.

Paper Details

Date Published: 12 September 2005
PDF: 8 pages
Proc. SPIE 5925, Nanophotonic Materials and Systems II, 59250A (12 September 2005); doi: 10.1117/12.616548
Show Author Affiliations
Frank Balzer, Humboldt-Univ. zu Berlin (Germany)
Laxman Kankate, Humboldt-Univ. zu Berlin (Germany)
Horst Niehus, Humboldt-Univ. zu Berlin (Germany)
Horst-Günter Rubahn, Syddansk Univ. (Denmark)

Published in SPIE Proceedings Vol. 5925:
Nanophotonic Materials and Systems II
Zeno Gaburro; Stefano Cabrini, Editor(s)

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