Research Highlights: Critical Influence of Organic A′-Site Ligand Structure on 2D Perovskite Crystallization

Organic A’-site ligand structure plays a crucial role in the crystal growth of 2D perovskites, but the underlying mechanism has not been adequately understood. This problem is tackled by studying the influence of two isomeric A’-site ligands, linear-shaped n-butylammonium (n-BA+) and branched iso-butylammonium (iso-BA+) on 2D perovskites from precursor to device, with a combination of in situ grazing-incidence wide-angle X-ray scattering and density functional theory.… Read More