Universität zu Köln

Hinderhofer, Alexander, Hagenlocher, Jan, Gerlach, Alexander ORCID: 0000-0003-1787-1868, Krug, Joachim, Oettel, Martin ORCID: 0000-0002-1128-2045 and Schreiber, Frank ORCID: 0000-0003-3659-6718 (2022). Nonequilibrium Roughness Evolution of Small Molecule Mixed Films Reflecting Equilibrium Phase Behavior. J. Phys. Chem. C, 126 (27). S. 11348 - 11358. WASHINGTON: AMER CHEMICAL SOC. ISSN 1932-7455

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Abstract

Understanding nonequilibrium phenomena, such as growth, and connecting them to equilibrium phase behavior is a major challenge, in particular for complex multicomponent materials. We use Xray reflectivity to determine the surface roughness of binary mixtures of several prototypical organic compounds. By analyzing the roughness as a function of composition, we find a systematic behavior depending on the bulk phase behavior in terms of intermixing, co-crystallization, or phase separation. Supported by kinetic Monte Carlo simulations, we provide evidence that the growth behavior can be rationalized by a lowered step edge barrier in the mixed films which is induced by reduced in-plane crystallinity.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Hinderhofer, Alexander UNSPECIFIED UNSPECIFIED UNSPECIFIED Hagenlocher, Jan UNSPECIFIED UNSPECIFIED UNSPECIFIED Gerlach, Alexander UNSPECIFIED orcid.org/0000-0003-1787-1868 UNSPECIFIED Krug, Joachim UNSPECIFIED UNSPECIFIED UNSPECIFIED Oettel, Martin UNSPECIFIED orcid.org/0000-0002-1128-2045 UNSPECIFIED Schreiber, Frank UNSPECIFIED orcid.org/0000-0003-3659-6718 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-666772
DOI:	10.1021/acs.jpcc.2c02177
Journal or Publication Title:	J. Phys. Chem. C
Volume:	126
Number:	27
Page Range:	S. 11348 - 11358
Date:	2022
Publisher:	AMER CHEMICAL SOC
Place of Publication:	WASHINGTON
ISSN:	1932-7455
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language PICENE THIN-FILMS; OPTICAL-PROPERTIES; GROWTH; PERFLUOROPENTACENE; NUCLEATION; DYNAMICS; VACUUM Multiple languages Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/66677