Ionic liquids in perovskite solar cells

摘要

Metal halide perovskites have gained a lot of attention particularly in recent years due to their excellent optoelectronic properties and simple scalable processability[1−3].One major application of halide perovskites is solar cells,however,despite the power conversion efficiencies(PCEs)have already reached around 25%[4,5],the long-term stability issue of such devices still impedes their commercialization.