The scalable fabrication of perovskite solar cells is hindered by the uneven deposition of perovskite colloidal particles during printing. Now, introduction of a mechanically interlocked network into the precursor ink to construct a three-dimensional network immobilizes the particles, regulating their rheological behaviour and enabling uniform deposition of large-area films.
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References
Gong, C. et al. An equalized flow velocity strategy for perovskite colloidal particles in flexible perovskite solar cells. Adv. Mater. 36, 2405572 (2024). This paper reports the relationship between the size of perovskite particles and the flow characteristics of the printing process.
Chen, C. et al. Fluid chemistry of metal halide perovskites. Angew. Chem. Int. Ed. 64, e202503593 (2025). This paper reports the complex relationship between the flow behaviour of perovskite particles and the performance of perovskite devices.
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This is a summary of: Shi, S. et al. Mechanically interlocked polymer scaffolds enable high-efficiency printed flexible perovskite photovoltaics. Nat. Synth. https://doi.org/10.1038/s44160-025-00904-6 (2025).
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Deposition of uniform perovskite films facilitated by mechanically interlocked scaffolds. Nat. Synth 5, 160–161 (2026). https://doi.org/10.1038/s44160-025-00916-2
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DOI: https://doi.org/10.1038/s44160-025-00916-2
