WOxmatchhead-capped ZnO nanorods for gas-blocking and light-masking behavior

In this study, matchhead WOx-capped ZnO nanorods (NRs) were formed by hydrothermal and sputtering processes. In order to examine the morphology and material properties, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy and X-ray diffraction were performed. Amorphous circular-shaped WOxheads were successfully grown on top of ZnO NRs. In order to explore the optical and gas responses of the nanostructures, UV-light responses and H2gas responses were measured for pure ZnO NRs and WOx/ZnO NRs. The results indicate that the WOxmatchhead cap can function like an umbrella to block the light absorption and gas reaction. Furthermore, the light and gas response times were lengthened due to the coverage of the WOxmatch head. WOxmatchhead/ZnO nanocomposites can function as light and gas modulation components for optoelectronic devices.