Syntheses of two-dimensional propylammonium lead halide perovskite microstructures by a solution route

Syntheses of 2D propylammonium lead halide perovskite microstructures are reported. The I-containing perovskite exhibits a flower-like hierarchical morphology and possesses the chemical formula (C₃H₇NH₃)₆Pb₄I₁₄. The hydrogen-bonding interactions between organic group C₃H₇NH₃⁺ and bilateral nearest-neighboring perovskite sheets are deemed to be responsible for this structure.