Layered Hybrid Lead Iodide Perovskites with Short Interlayer Distances

Layered hybrid perovskites comprise modular components that are individually highly tunable, resulting in materials with a range of structures and properties. In these layered materials, the usual assumption is two-dimensional electronic behavior, because relatively large separations between inorganic layers. Here, we report two lead iodide possess unusually short interlayer distances: (IPA)2(MA)Pb2I7 (ACA)(MA)PbI4 (IPA = isopropylammonium, MA methylammonium, ACA acetamidinium). These compounds prepared from mixing small organic cations, where they crystallize Ruddlesden–Popper type structure alternating cations space, respectively. The crystal compared detail related structures, analyzed using density functional theory based calculations. Time-resolved microwave conductivity measurements employed to provide insight into charge transport compounds. This work exemplifies unusual templating role halide