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. 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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| Author: | Pelin Çiloğlu, Carmen Tretmans, Roland Herzog, Jan-F. PietschmannORCiDGND, Martin Stoll |
|---|---|
| URN: | urn:nbn:de:bvb:384-opus4-1244509 |
| Frontdoor URL | https://opus.bibliothek.uni-augsburg.de/opus4/124450 |
| ISSN: | 1090-2716OPAC |
| Parent Title (English): | Journal of Computational Physics |
| Publisher: | Elsevier |
| Place of publication: | Amsterdam |
| Type: | Article |
| Language: | English |
| Date of Publication (online): | 2025/08/14 |
| Year of first Publication: | 2025 |
| Publishing Institution: | Universität Augsburg |
| Release Date: | 2025/08/18 |
| Volume: | 540 |
| First Page: | 114280 |
| DOI: | https://doi.org/10.1016/j.jcp.2025.114280 |
| Institutes: | Mathematisch-Naturwissenschaftlich-Technische Fakultät |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Mathematik | |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Mathematik / Lehrstuhl für Inverse Probleme | |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 51 Mathematik / 510 Mathematik |
| Licence (German): |  CC-BY 4.0: Creative Commons: Namensnennung (mit Print on Demand) |
