title: Controlling the growth mode of para-sexiphenyl (6P) on ZnO by partial fluorination.
abstract: We report on the impact of partial fluorination of para-sexiphenyl (6P) on the growth mode when deposited on the non-polar ZnO(101̄0) surface. The evolution of the thin film structure and morphology is monitored by in situ atomic force microscopy and in situ real-time X-ray scattering. Both 6P and its symmetrical, terminally fluorinated derivative (6P-F4) grow in a highly crystalline mode, however, with a distinctly different morphology. While 6P films are characterised by the formation of two different phases with three-dimensional nanocrystallites and consequently a rather rough surface morphology, layer-by-layer growth and phase purity in case of 6P-F4 prevails leading to smooth terraced thin films. We relate the different growth behaviour to specifics of the thin film structure.
authors.affiliation: Humboldt Universität zu Berlin, Department of Physics, Berlin, Germany. stefan.kowarik@physik.hu-berlin.de.
authors.forename: M
authors.initials: M
authors.lastname: Sparenberg
authors.forename: A
authors.initials: A
authors.lastname: Zykov
authors.forename: P
authors.initials: P
authors.lastname: Beyer
authors.forename: L
authors.initials: L
authors.lastname: Pithan
authors.forename: C
authors.initials: C
authors.lastname: Weber
authors.forename: Y
authors.initials: Y
authors.lastname: Garmshausen
authors.forename: F
authors.initials: F
authors.lastname: Carlà
authors.forename: S
authors.initials: S
authors.lastname: Hecht
authors.forename: S
authors.initials: S
authors.lastname: Blumstengel
authors.forename: F
authors.initials: F
authors.lastname: Henneberger
authors.forename: S
authors.initials: S
authors.lastname: Kowarik