Fabrication of ZnO Nanorods Structure for Drastically Enhancing Gas Sensing Response to NO2 Gas

In this report, zinc oxide thin film was successfully deposited on a glass substrate by using simple and low-cost technique i.e. modified Successive Ion Layer Adsorption Reaction (SILAR). Prepared characterized for its physical chemical properties XRD diffraction, Field Emission Scanning Electron Microscopy (FESEM), energy dispersive spectroscopy (EDS), UV-VIS spectroscopy, Raman Fourier transform infrared (FTIR). The results of structural morphological show that the prepared has wurtzite hexagonal structure with nanorods-like morphology. Gas sensing characteristics revealed sensitive to NO2 gas. response calculated at operating temperature 200 °C, 1.37 when concentration 10 ppm, increased which reached 2.16 80 ppm short recovery time. HIGHLIGHTS Nanorods- like morphology ZnO were fabricated via SILAR nanorods exhibit high response/ time gas °C synthesis method behavior synthesized nanorods- morphology, promising candidate fabricating low-consumption sensors GRAPHICAL ABSTRACT