Conversion of WO₃ thin films into self-crosslinked nanorods for large-scale ultraviolet detection

Abstract

We heat-treated an amorphous large-area WO3 thin film to synthesize high-density, high-quality WO3 nanorods.

A Review on the Properties and Applications of WO3 Nanostructure−Based Optical and Electronic Devices

“…In a recent study, Kim et al heat-treated a large area of amorphous WO 3 TFs to fabricate high quality, high-density WO 3 NRs. It is used to prepare UV detectors, with a fast reaction speed (0.316 s), very sensitive to the actual UV 261 nm wavelength, and can effectively perform UV detection ( Figure 3 a–d) [ 33 ]. The carriers can be generated by transitions between bands caused by UV absorption.…”

“…The photocurrent response of UV-C ray (216 nm) irradiation of self-crosslinked WO 3 ( c ) without Ag nanoparticles and ( d ) with Ag nanoparticles. Reproduced with permission from [ 33 ]. Copyright Royal Society of Chemistry.…”

Characterization and Modeling of WO3 Nanowires Synthesized via the Solvothermal Method: A Proposed 8-Pointed Star Prism Structure

“…WO 3 is a multifunctional material that can be used for hydrocracking catalysts, photocatalysis, electrochromism, gasochromism, etc. − It is also an important material for the industrial synthesis of the scheelite phase such as Ag 2 WO 4 , SrWO 4 , CaWO 4 , etc. − Currently, many methods have been used to prepare the WO 3 film, such as PVD, − CVD, , sol–gel, , hydrothermal/solvothermal, , electrodeposition, anodic oxidation, , and molten salt synthesis. , Among these methods, the solvothermal method is paid much attention because of its low cost and simple experimental conditions. , It has been confirmed that solvothermally synthesized WO 3 films are composed of basic units such as nanowires, nanorods, nanoplates, nanosheets, and so on. Further research indicates that each of the aforementioned basic units is a WO 3 single crystal with a specific growth direction, and the growth direction is varied in different studies, indicating that it is affected by many parameters of the solvothermal process. − As is known to all, besides the growth direction, the shape of a single crystal is also affected by the exposed lattice planes.…”