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Solar cells (PSCs) with quasi‐2D Ruddlesden–Popper perovskites (RPP) exhibit greater environmental stability than 3D perovskites; however, the low power conversion efficiency (PCE) caused by anisotropic crystal orientations and defect sites in the bulk RPP materials limit future commercialization. Herein, a simple post–treatment is reported for the top surfaces of RPP thin films (RPP composition of...
Perovskite Solar Cells
In article number 2302143, Ju‐Hyeon Kim, Heejoo Kim, Kwanghee Lee, and co‐workers describe an efficient quasi‐2D‐perovskite‐based solar cell. They improve the photocurrent and stability of the cell through a simple post‐treatment, which induces both defect passivation and crystal reconstruction effects, resulting in efficient charge transport. This approach provides an innovative...