• S K Badiger
• Omnath Patil
• Mohammed Afzal
• S M Hanagodimath

Gas sensing behavior of NiO and SnO2 thin films, synthesized by conventional spray pyrolysis technique have been investigated for H2S gas. X-ray diffraction (XRD) pattern revealed the polycrystalline nature of the film with a mixed phase comprising of NiO and SnO2. The surface morphology studied by scanning electron microscopy (SEM), the granular, tubular, uniformly covering entire substrate surface observed in synthesized thin films. The gas sensing studies performed in dry air at constant temperature 100oC indicated better sensing characteristic for H2S gas. And also influence of variation of Ni and Sn concentrations on the sensor performance have been investigated for the same gas. H2S gas exhibits reducing behavior for n-type semiconductor and oxidizing behavior for p-type semiconductor.

NiO, SnO2, Spray pyrolysis, gas sensing, XRD and SEM.

"Hydrogen Sulphide gas sensing characteristics of mixed metal oxide thin films grown by spray Pyrolysis technique ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 12, page no.380-383, December-2018, Available :http://www.jetir.org/papers/JETIR1812149.pdf

"Hydrogen Sulphide gas sensing characteristics of mixed metal oxide thin films grown by spray Pyrolysis technique ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 12, page no. pp380-383, December-2018, Available at : http://www.jetir.org/papers/JETIR1812149.pdf