Progress in Scalable Coating and Roll-to-Roll Compatible Printing Processes of Perovskite Solar Cells toward Realization of Commercialization

摘要

Organic–inorganic halide perovskite solar cells (PeSCs) have attracted worldwidernattention due to their excellent photovoltaic properties, such as theirrnproper bandgap, strong light absorption, long exciton diffusion length, andrneasy device fabrication with solution processes, suggesting a great potentialrnfor low-cost, high-performance solar cells. After a power conversion efficiencyrn(PCE) of 3.8% achieved in 2009, numerous efforts have been made to creaternPeSCs with high PCEs over 20% in small-area cells. The next challenge isrntransition from the lab-scale spin coating to a large-scale coating/printing,rnwhich will preferably involve the cost-competitive roll-to-roll manufacturingrnand vacuum-free full-printing process. This review provides a progress reportrnon studies related to the scalable deposition methods for PeSCs, such asrnslot-die coating, blade coating, spray coating, and various other methods,rnand to their processing strategies for morphology control in perovskite filmrnformation and discusses the challenges and potential of commercialization ofrnPeSCs in the future.