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Predictive Model for the Meniscus-Guided Coating of High-Quality Organic Single-Crystalline Thin Films
Robby Janneck1,2, Federico Vercesi3, Paul Heremans3,4
1IMEC, Kapeldreef 75, Leuven, B-3001, Belgium. robby.janneck@imec.be.
Abstract:
A model that describes solvent evaporation dynamics in meniscus-guided coating techniques is developed. In combination with a single fitting parameter, it is shown that this formula can accurately predict a processing window for various coating conditions. Organic thin-film transistors (OTFTs), fabricated by a zone-casting setup, indeed show the best performance at the predicted coating speeds with mobilities reaching 7 cm2 V-1 s-1 .
