title: Initial stage of crystalline rubrene thin film growth on mica (0 0 1).
abstract: We have studied the morphology and the spatially resolved photoluminescence of rubrene thin films at the early stage of crystallization. The initial growth proceeds via the formation of a wetting layer and the nucleation of islands with an amorphous structure. Crystallization starts when the amorphous islands coalesce and needle like crystalline fibers are formed in the gap between islands. The crystalline fibers then grow on top and in between the original amorphous islands leading to an "open network" of islands. The latter acts as the basis for the growth of semi-crystalline spherulites.
authors.affiliation: Institute of Experimental Physics, Johannes Kepler University Linz, Altenbergerstr. 69, A-4040 Linz, Austria.
authors.forename: H
authors.initials: H
authors.lastname: Zaglmayr
authors.forename: L D
authors.initials: LD
authors.lastname: Sun
authors.forename: G
authors.initials: G
authors.lastname: Weidlinger
authors.forename: Sh M Abd
authors.initials: SM
authors.lastname: Al-Baqi
authors.forename: H
authors.initials: H
authors.lastname: Sitter
authors.forename: P
authors.initials: P
authors.lastname: Zeppenfeld