Vertically Aligned CsPbBr₃ Nanowire Arrays with Template-Induced Crystal Phase Transition and Stability.

ABSTRACT: Metal halide perovskites show great promise for a wide range of optoelectronic applications but are plagued by instability when exposed to air and light. This work presents low-temperature solution growth of vertically aligned CsPbBr₃ nanowire arrays in AAO (anodized aluminum oxide) templates with excellent stability, with samples exposed to air for 4 months still exhibiting comparable photoluminescence and UV stability to fresh samples. The single-crystal nanowire length is adjusted from ∼100 nm to 5 μm by adjusting the precursor solution amount and concentration, and we observe length-to-diameter ratios as high as 100. Structural characterization results indicate that large-diameter CsPbBr₃ nanowires have an orthorhombic structure, while the 10 nm- and 20 nm-diamete

SUBMITTER: Zhang Z 

PROVIDER: S-EPMC7976601 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature