Balancing Crystallization Kinetics and Lattice Strain Enables Thermally Stable Slot-Die-Coated Narrow-Bandgap Perovskite Solar Cells.
Unbalanced crystallization kinetics in mixed Sn-Pb perovskite cause film heterogeneity and high defect densities, thereby constraining overall performance and stability, particularly under scalable processing conditions. Here, we investigate nanocrystal-mediated crystallization regulation in ambient-processed, slot-die...