Improved Sensitivity of α-FeO Nanoparticle-Decorated ZnO Nanowire Gas Sensor for CO.

A strategy for improving the sensitivity of a sensor for detecting CO and NH gases is presented herein. The gas sensor was fabricated from ZnO metal oxide semiconductor nanostructures grown via a vapor⁻liquid⁻solid process and decorated with α-FeO nanoparticles via a sol⁻gel process. The response was enhanced by the formation of an α-FeO/ZnO n⁻n heterojunction and the growth of thinner wires.

Improved Electrical Performance of SiO₂-Doped Indium Zinc Oxide Thin-Film Transistor.

In this study, we investigated the effect of oxygen content on the stability and the role of silicon in amorphous SiO₂-doped indium-zinc-oxide thin film transistor. The SiO₂-doped IZO (SIZO) thinfilms were deposited at room temperature by radio-frequency magnetron co-sputtering. To optimize stability and electrical performance, we changed the amount of oxygen by changing oxygen gas ratio in reactive sputtering (11%, 12%, and 13%) and used SiO₂ target to deposit SIZO active layer.