Solution-phase synthesis of CsPbI3 nanowire clusters via polymer-induced anisotropic growth and self-assembly

Abstract

A facile solution-phase synthesis of black γ-phase CsPbI₃ nanowire clusters was developed using poly(methyl methacrylate) (PMMA) as surfactant. PMMA was found to efficiently retard the crystal growth, thereby inducing anisotropic growth for formation of the nanowire structure, while the intermolecular hydrogen bonds of PMMA act as a driving force for self-assembly of the nanowires.