Fabrication and Characterization of ZnO nanorods for room temperature Carbon Monoxide sensing application

Abstract

Detection of toxic gas mainly Carbon monoxide (CO) is very important to avoid loss of lives in various applications. Zinc Oxide (ZnO) nanorods based gas sensor for sensing CO gas is fabricated using a hydrothermal method over a rigid substrate. PEDOT: PSS is used to establish p-type over n-type ZnO nanorods. The material characterization of the fabricated sample is done using X-Ray Diffraction (XRD) revealing dominant, UV-Visible spectroscopy (UV-Vis), Photoluminescence spectroscopy (PL) and Field Emission Scanning Electron Microscope (FESEM). After the characterization of the material, the fabricated ZnO nanorod based sensor is exposed to CO gas at ppm ranging from 50 to 375 at room temperature using gas sensing setup. The sensitivity of the fabricated device is calculated and found to be 24.04%.