Anisotropic Growth of Centimeter-Size CsCu₂ I₃ Single Crystals with Ultra-Low Trap Density for Aspect-Ratio-Dependent Photodetectors.

ABSTRACT: Low-dimensional ternary copper iodide metal halide with strong quantum confinement effects has made great progress in optoelectronic fields. However, efficient regulation of anisotropic growth of metal halides single crystal still remains a great challenge. Herein, 2 cm size CsCu₂ I₃ single crystals with tunable aspect ratio and the trap states (n_trap ) as low as 5.38 × 10⁹  cm^-3 are fabricated by optimized anti-solvent vapor-assisted method, in which the growth cycle is shortened by half. Evidenced by real-time observation and the LaMer growth model, the rapid and anisotropic growth mechanism is ascribed to preferential 1D growth, promoted by high concentration and fast vapor rate. Furthermore, the aspect-ratio-dependent optoelectroni

SUBMITTER: Han S 

PROVIDER: S-EPMC9982547 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature