Photocatalytic Edge Growth of Conductive Gold Lines On Microstructured TiO₂-ITO Substrates.

ABSTRACT: Titanium dioxide is well-known for its excellent photocatalytic properties. UV-controlled photodeposition of gold on TiO₂ is achieved by photocatalytic reduction of precursor ions from a tetrachloroauric solution. During the growth process on the surface, clusters grow from nucleation centers and coalescence is observed for sufficiently long UV illumination times, resulting in gold structures with complex shapes. Here, we hypothesize and demonstrate that the growth process is altered by employing an ITO sublayer below the TiO₂ layer. Photocatalytic gold growth experiments on a microstructured thin film stack of 6 nm ITO and 70 nm TiO₂ lead to strongly localized gold growth along the edge of the patterned area. A conductive gold line with a height of 3.8 μm

SUBMITTER: Abshari F 

PROVIDER: S-EPMC11394007 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature