Surfactant modified SnO2 nanostructured thin film for improved sensing performance of LPG and ammonia

摘要: SnO2 nanostructured thin films have been successfully synthesized by way of spray pyrolysis from surfactant added solution. The X-ray diffraction pattern discloses the tetragonal rutile phase deposited films, which experience a grain size reduction 35 nm to 19 nm, on addition PVP in precursor. Gas sensing investigations modified film show considerable LPG and NH3 response at lower operating temperature 150°C. Quick (∼20s) fast recovery (∼30s) are main features these sensors. measurement AC conductivity sample allows understanding conduction mechanism action for enhance detection sensitivity greatly.