Slot-die coating fabrication of perovskite solar cells toward commercialization

Although there have been significant developments due to the advantages of perovskite solar cells (PSCs), several challenges still stand in the way of their commercialization. In addition to the issue of stability that needs to be overcome, another huge impediment is the absence of a high-throughput production capability. Currently, slot-die coating is the most promising technology for upscaling of PSCs due to its high compatibility with roll-to-roll production. The PSCs are moving forward toward commercialization at an unprecedented speed. In view of this, this review highlights the research progresses in the area of slot-die-based PSCs and examines the challenges that this technology will encounter in its future development.