Role of dislocations in self-assembled 2D layered raspberry surface to 3D flower-like microstructural evolution in hybrid halide perovskite.

ABSTRACT: Molecular self-assembly is a unique process in nature leading to interesting growth of crystals and layered structures. However, understanding the nucleation pathways leading to the formation and evolution of self-assembled molecular structures is often more complex to decipher from experimental and theoretical investigations. Here, we report a unique growth of 2D layered microcrystals having 'raspberry surface' which further evolute to 3D 'flower-like' microcrystals observed for a hybrid bismuth based lead-free halide perovskite material. In contrast, in a mixed halide system obtained under bromine (Br) doping, the microcrystals grow as a 2D sheet which under evolution retains the shape of 'lotus leaf-like' microstructure. The growth mechanism proposed after comprehensive microscopic inve

SUBMITTER: Mandal SK 

PROVIDER: S-EPMC12852857 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature