Meng-Chen Shih

1 month ago | science.org | Shaun Tan |Meng-Chen Shih |Yongli Lu |Seung-Gu Choi

Editor’s summaryRobust, phase-pure two-dimensional (2D) passivation layers for 3D perovskites stabilize solar cells against degradation under ultraviolet irradiation. Tan et al. found that 2D interlayers based on octylammonium and methylammonium cations formed with a mixed solvent (dimethylsulfoxide and isopropanol) spontaneously formed phase-pure 2D perovskites with high crystallinity.