Exploiting the Bragg Mirror Effect of TiO₂ Nanotube Photonic Crystals for Promoting Photoelectrochemical Water Splitting.

ABSTRACT: Exploiting the Bragg mirror effect of photonic crystal photoelectrode is desperately desired for photoelectrochemical water splitting. Herein, a novel TiO₂ nanotube photonic crystal bi-layer structure consisting of a top nanotube layer and a bottom nanotube photonic crystal layer is presented. In this architecture, the photonic bandgap of bottom TiO₂ nanotube photonic crystals can be precisely adjusted by modulating the anodization parameters. When the photonic bandgap of bottom TiO₂ nanotube photonic crystals overlaps with the electronic bandgap of TiO₂, the bottom TiO₂ nanotube photonic crystal layer will act as a Bragg mirror, leading to the boosted ultraviolet light absorption of the top TiO₂ nanotube layer. Benefiting f

SUBMITTER: Meng M 

PROVIDER: S-EPMC11547193 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature