Phase-pure Ruddlesden–Popper interlayer formation via hybrid processing for efficient perovskite photovoltaics

This is the authors' abstract. We don't add key points for this paper.

An evaporation-assisted hybrid process uses evaporated PbI 2 to fabricate scalable, phase-pure n = 1 Ruddlesden–Popper phase layers on 3D perovskites. Butylammonium intercalation limits bulk diffusion, reducing traps and improving performance.