Influence of doping with silver nanoparticles on the molybdenum trioxide gas sensor prepared by spray pyrolysis

By spray pyrolysis method, Molybdenum trioxide films are deposited at 400 °C and doped with silver nanoparticles at different concentrations between (1 and 3) mM. X-ray diffraction (XRD), Atomic force microscopy (AFM), Field-emission scanning electron microscopy (FE-SEM), UV-vis spectroscopy, used to examine the physical properties films. According to XRD data, doping enhances the crystalline quality of deposited MoO3 thin films, which crystallize in an orthorhombic structure with a (021). The enargy gap was found (2.85 - 2.59) eV in films. The performance of gas sensing in the movie CO2 Different ratios of silver nanoparticles (0, 1, and 3 mM) were used for gas measurements. It was discovered that the gas detecting system's performance had greatly increased.