12 September 2005 Epitaxy vs. dipole assisted growth for organic oligomer nanoaggregates
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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.
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Frank Balzer, Frank Balzer, Laxman Kankate, Laxman Kankate, Horst Niehus, Horst Niehus, Horst-Günter Rubahn, Horst-Günter Rubahn, } "Epitaxy vs. dipole assisted growth for organic oligomer nanoaggregates", Proc. SPIE 5925, Nanophotonic Materials and Systems II, 59250A (12 September 2005); doi: 10.1117/12.616548; https://doi.org/10.1117/12.616548


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