The Polymer Society of Korea

콜로이드 및 분자조립 부문위원회

포스터발표

Solution-Phase Growth and Lyotropic Self-Assembly of Cs₃Cu₂I₅ Perovskite Nanowires with Large Optical Anisotropy

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Perovskite nanowires are expected to serve as building blocks for next-generation electronic and photonic devices due to their well-defined anisotropic morphology. Although there has been significant progress in the synthesis and applications of perovskite nanowires, most research has focused on lead halide perovskites. Here, high-aspect ratio Cs₃Cu₂I₅ nanowires are synthesized using a facile solution-phase method by amplifying surface energy differences with a weakly polar solvent. Controlling solvent polarity enables effective manipulation of nucleation and growth kinetics, allowing the size and anisotropy to be adjusted over a wide range. Benefited from the solution processability, lyotropic self-assembly of Cs₃Cu₂I₅ nanowires has been achieved. Well-aligned nanowires prepared with the shearing the suspension exhibit a large photoluminescence polarization anisotropy, owing to their asymmetric crystal structure and morphological anisotropy.

2PS-45

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