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@ARTICLE{Ronsin:903149,
author = {Ronsin, Olivier J. J. and Jang, DongJu and Egelhaaf,
Hans-Joachim and Brabec, Christoph J. and Harting, Jens},
title = {{P}hase-{F}ield {S}imulation of {L}iquid–{V}apor
{E}quilibrium and {E}vaporation of {F}luid {M}ixtures},
journal = {ACS applied materials $\&$ interfaces},
volume = {13},
number = {47},
issn = {1944-8244},
address = {Washington, DC},
publisher = {Soc.},
reportid = {FZJ-2021-04873},
pages = {55988 - 56003},
year = {2021},
abstract = {In solution processing of thin films, the material layer is
deposited from a solution composed of several solutes and
solvents. The final morphology and hence the properties of
the film often depend on the time needed for the evaporation
of the solvents. This is typically the case for organic
photoactive or electronic layers. Therefore, it is important
to be able to predict the evaporation kinetics of such
mixtures. We propose here a new phase-field model for the
simulation of evaporating fluid mixtures and simulate their
evaporation kinetics. Similar to the Hertz–Knudsen theory,
the local liquid–vapor (LV) equilibrium is assumed to be
reached at the film surface and evaporation is driven by
diffusion away from this gas layer. In the situation where
the evaporation is purely driven by the LV equilibrium, the
simulations match the behavior expected theoretically from
the free energy: for evaporation of pure solvents, the
evaporation rate is constant and proportional to the vapor
pressure. For mixtures, the evaporation rate is in general
strongly time-dependent because of the changing composition
of the film. Nevertheless, for highly nonideal mixtures,
such as poorly compatible fluids or polymer solutions, the
evaporation rate becomes almost constant in the limit of low
Biot numbers. The results of the simulation have been
successfully compared to experiments on a
polystyrene–toluene mixture. The model allows to take into
account deformations of the liquid–vapor interface and,
therefore, to simulate film roughness or dewetting.},
cin = {IEK-11},
ddc = {600},
cid = {I:(DE-Juel1)IEK-11-20140314},
pnm = {1215 - Simulations, Theory, Optics, and Analytics (STOA)
(POF4-121) / DFG project 449539983 - Prozess-Struktur
Relationen für die lösungsmittelbasierte organische
Photovoltaik},
pid = {G:(DE-HGF)POF4-1215 / G:(GEPRIS)449539983},
typ = {PUB:(DE-HGF)16},
pubmed = {34792348},
UT = {WOS:000751894800019},
doi = {10.1021/acsami.1c12079},
url = {https://juser.fz-juelich.de/record/903149},
}