Scaffold-Guided Crystallization of Oriented α-FAPbI₃ Nanowire Arrays for Solar Cells.

ABSTRACT: Perovskite nanowire arrays with large surface areas for efficient charge transfer and continuous highly crystalline domains for efficient charge transport exhibit ideal morphologies for solar-cell active layers. Here, we introduce a room temperature two-step method to grow dense, vertical nanowire arrays of formamidinium lead iodide (FAPbI₃). PbI₂ nanocrystals embedded in the cylindrical nanopores of anodized titanium dioxide scaffolds were converted to FAPbI₃ by immersion in a FAI solution for a period of 0.5-30 min. During immersion, FAPbI₃ crystals grew vertically from the scaffold surface as nanowires with diameters and densities determined by the underlying scaffold. The presence of butylammonium cations during nanowire growth stabilized the

SUBMITTER: Alaei A 

PROVIDER: S-EPMC10711707 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature