Intermolecular Interaction Engineering for Efficient Large-Area Tin-based Perovskite Solar Cells.
Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) has been widely used as a hole transport layer (HTL) in environmentally friendly tin-based perovskite solar cells (TPSCs). However, its intrinsic weak acidity and strong tendency toward molecular aggregates hinder its performance in TPSCs. Here, we dev...