Preconditioning for a Cahn-Hilliard-Navier-Stokes model for morphology formation in organic solar cells
We present a model for the morphology evolution of printed organic solar cells, which occurs during the drying of a mixture of polymer, non-fullerene acceptor, and solvent. Our model uses a phase field approach coupled to a Navier-Stokes equation describing the macroscopic movement of the fluid. Add...
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| Hauptverfasser: | , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
7 August 2025
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| In: |
Journal of computational physics
Year: 2025, Jahrgang: 540, Pages: 1-18 |
| ISSN: | 1090-2716 |
| DOI: | 10.1016/j.jcp.2025.114280 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1016/j.jcp.2025.114280 Verlag, kostenfrei, Volltext: https://www.sciencedirect.com/science/article/pii/S0021999125005637 
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| Verfasserangaben: | Pelin Çiloğlu, Carmen Tretmans, Roland Herzog, Jan-F. Pietschmann, Martin Stoll |
| Zusammenfassung: | We present a model for the morphology evolution of printed organic solar cells, which occurs during the drying of a mixture of polymer, non-fullerene acceptor, and solvent. Our model uses a phase field approach coupled to a Navier-Stokes equation describing the macroscopic movement of the fluid. Additionally, we incorporate the evaporation process of the solvent using an Allen-Cahn equation. The model is discretized using a finite-element approach with a semi-implicit discretization in time. The resulting (non)linear systems are coupled and of large dimensionality. We present a preconditioned iterative scheme to solve them robustly with respect to changes in the discretization parameters. We illustrate that the preconditioned solver shows parameter-robust iteration numbers and that the model qualitatively captures the behavior of the film morphology during drying. |
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| Beschreibung: | Gesehen am 22.01.2026 |
| Beschreibung: | Online Resource |
| ISSN: | 1090-2716 |
| DOI: | 10.1016/j.jcp.2025.114280 |