Journal article
Formation trajectories of solution-processed perovskite thin films from mixed solvents
Cell reports physical science, v 6(7), p102655
16 Jul 2025
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The engineering of mixed-solvent formulations and their evaporation conditions are key to reproducible perovskite coatings for high-performance photovoltaics. Here, we report a lumped-parameter evaporation model to predict the evolution of a perovskite ink liquid film over time (solvent ratio, solute concentration, and film thickness). The drying-rate model is validated via in situ film-thickness measurements, and the dicted transient liquid film state is mapped as a process path. These methods allow for the prediction of cess sensitivity to local environmental factors and the understanding and visualization of a broader processing parameter space enabled through the coupling of process and ink engineering. Process maps are applied to create a new framework for scalable perovskite coating development with a goal of improving the reproducibility and transferability of perovskite fabrication. This approach is demonstrated with blade-coated FA0.83Cs0.17PbI3 photovoltaic devices, improving the photovoltaic conversion efficiency from 17.5% 1.7% to 20.3% +/- 0.6%.
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Details
- Title
- Formation trajectories of solution-processed perovskite thin films from mixed solvents
- Creators
- Jesse L. Starger - Drexel Univ, Dept Chem & Biol Engn, Philadelphia, PA 19104 USAAmy E. Louks - National Laboratory of the RockiesKelly Schutt - National Laboratory of the RockiesE. Ashley Gaulding - National Laboratory of the RockiesRobert W. Epps - National Laboratory of the RockiesRosemary C. Bramante - National Laboratory of the RockiesRoss A. Kerner - National Laboratory of the RockiesKai Zhu - National Laboratory of the RockiesJoseph J. Berry - University of Colorado BoulderNicolas J. Alvarez - Drexel University, Chemical and Biological EngineeringRichard A. Cairncross - Drexel University, Chemical and Biological EngineeringAxel F. Palmstrom - National Laboratory of the RockiesNational Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Publication Details
- Cell reports physical science, v 6(7), p102655
- Publisher
- Elsevier
- Number of pages
- 12
- Grant note
- CMMI-933819 / National Science Foundation; National Science Foundation (NSF) 38256; 52776 / US DOE Office of Energy Efficiency and Renewable Energy Solar Technologies Office; United States Department of Energy (DOE) DE-AC36-08GO28308 / National Renew-able Energy Laboratory for the US DOE; United States Department of Energy (DOE) US Department of Energy (DOE) Office of Science and Grad-uate Student Research Program (SCGSR); United States Department of Energy (DOE)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:001540247500001
- Scopus ID
- 2-s2.0-105008575630
- Other Identifier
- 991022059839204721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Energy & Fuels
- Materials Science, Multidisciplinary
- Physics, Multidisciplinary