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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.3c01469
|2 doi
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|a eng
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|a Starger, Jesse L
|e verfasserin
|4 aut
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| 245 |
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|a Quasi-2D Model to Predict Solid Microstructure in Drying Thin Films
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|c 2023
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|a Text
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 17.12.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a The microstructure of solid coatings produced by solution processing is highly dependent on the coupling between growth, solute diffusion, and solvent evaporation. Here, a quasi-2D numerical model coupling drying and solidification is used to predict the transient lateral growth of two adjacent nuclei growing toward each other. Lateral gradients of the solute and solvent influence the evolution of film thickness and solid growth rate. The important process parameters and solvent properties are captured by the dimensionless Peclet number (Pe) and the Biot number (Bi), modified by an aspect ratio defined by the film thickness and distance between nuclei. By variation of Pe and Bi, the evaporation dynamics and aspect ratio are shown to largely determine the coating quality. These findings are applied to drying thin films of crystallizing halide perovskites, demonstrating a convenient process map for capturing the relationship between the modified Bi and well-defined coating regimes, which may be generalized for any solution-processed thin film coating systems
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|a Journal Article
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|a Fafarman, Aaron T
|e verfasserin
|4 aut
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|a Baxter, Jason B
|e verfasserin
|4 aut
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1 |
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|a Alvarez, Nicolas J
|e verfasserin
|4 aut
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|a Cairncross, Richard A
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1985
|g 39(2023), 46 vom: 21. Nov., Seite 16231-16243
|w (DE-627)NLM098181009
|x 1520-5827
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|g volume:39
|g year:2023
|g number:46
|g day:21
|g month:11
|g pages:16231-16243
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|u http://dx.doi.org/10.1021/acs.langmuir.3c01469
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