Optically Activated 3D Thin-Shell TiO₂ for Super-Sensitive Chemoresistive Responses: Toward Visible Light Activation.

ABSTRACT: One of the well-known strategies for achieving high-performance light-activated gas sensors is to design a nanostructure for effective surface responses with its geometric advances. However, no study has gone beyond the benefits of the large surface area and provided fundamental strategies to offer a rational structure for increasing their optical and chemical performances. Here, a new class of UV-activated sensing nanoarchitecture made of highly periodic 3D TiO₂, which facilitates 55 times enhanced light absorption by confining the incident light in the nanostructure, is prepared as an active gas channel. The key parameters, such as the total 3D TiO₂ film and thin-shell thicknesses, are precisely optimized by finite element analysis. Collectively, this fundamental de

SUBMITTER: Cho D 

PROVIDER: S-EPMC7856904 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature