Vacuum‐Processed Perovskite Solar Cells: Materials and Methods

Perovskite solar cells (PSCs) based on inexpensive organic−inorganic hybrid semiconductors are considered a promising next‐generation solar cell technology. For PSC commercialization, the further development of efficient and scalable fabrication methods is essential. To date, solution‐based methods have been widely studied due to simplicity and cost‐effectiveness. Despite the advantages, it is still necessary for developing vacuum‐based methods as the alternative methods due to reproducibility and uniformity with in a large area. However, it is insufficiently studied for a systematic understanding of vacuum‐based methods. To give helpful insight for understanding vacuum‐based methods for PSC commercialization, this review introduces the precursor and charge transporting materials with the various preparation methods for vacuum‐processed PSCs.