| Abstract Scope |
Metal halide perovskites emerged as promising materials for next-generation optoelectronic devices due to their high light coefficient, tunable band gaps, and compatibility with low-cost solution processing. To foster their commercialization, it is necessary to maximize the scalability of fabrication. However, many existing approaches rely on additional fabrication steps, which introduce process uncertainty, increase manufacturing costs, and limit practical scalability. In this work, we develop a strategy that integrates two separate processes, antisolvent for controlling crystallization and defect passivation, into a single processing step for perovskite solar cells by dissolving ionic salts directly into the anti-solvent. This approach simplifies the fabrication process while simultaneously improving quality. By enabling concurrent control of crystallization and defect suppression, we investigate how salt chemistry, concentration, and thermal processing influence thin-film morphology, crystallinity, and defect suppression. Our results demonstrate that simplified processing, combined with rational material design, can improve optical properties, stability, and device performance. |