Characterization of NO2 gas sensing for ZnO nanostructure grown hydrothermally on porous silicon

ZnO nanostructures have lately been deemed an effective material for fabricating gas sensors, As a result, ZnO nanoparticles are commonly utilized to make effective gas sensors for detecting a variety of hazardous and poisonous chemicals. The current review article focuses on nitrogen dioxide (NO2) gas sensor advances based on ZnO nanoparticles, X-ray diffraction confirmed the wurtzite structure, Surface roughness, layer homogeneity, and morphological structural analysis are studied using Atomic Force Microscopy (AFM). UV-vis and photoluminescence spectra were used to study the optical characteristics of the as-prepared ZnO nanostructures, The electrical properties such as the current density-voltage (J-V) measurements, Finally, the effects of adjusting operating temperature of NO2 gas sensor made from the prepared samples on sensor's sensitivity, recovery time and response time have been explored.