Complexation-Mediated Diffusion-Limited Crystal Growth: A General Framework for Anisotropic Crystal Growth in Cu-Based Perovskites
발표자
이현민 (한양대학교)
연구책임자
강영종 (한양대학교)
공동저자
이현민 (한양대학교), 강영종 (한양대학교)
초록
내용
The rational synthesis of one-dimensional (1D) lead-free perovskite nanostructures remains challenging due to complex precursor chemistry that defies classical crystal growth models. Here, we establish and experimentally validate a Complexation-Mediated Diffusion-Limited Growth (CMDLG) framework that integrates coordination chemistry with mass transport kinetics to direct the growth of Cs3Cu2I5 nanowires (NWs). This framework transforms precursor complexation from a synthetic hurdle into a powerful tool for directing anisotropic growth. By engineering the solvent environment to stabilize bulky iodocuprate complexes, we restrict mass transport and introduce a kinetic barrier, complex dissociation, at the growth front, driving the system into a diffusion-limited regime. This enables tunable synthesis of faceted microwires in polar solvents and ultralong, uniform NWs (aspect ratio >103) in the low-polarity solvent.