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.

Automated summary

ZnO nanostructures are effective materials for gas sensors, especially for NO2 gas sensors. This review article explores the advances in NO2 gas sensors based on ZnO nanoparticles, including surface morphology analysis, optical characteristics study, and electrical property measurements. Adjusting the operating temperature of the sensor can significantly impact its sensitivity, recovery time, and response time.