R. H. Bari and S. B. Patil

ABSTRACT

In present investigation, nanostructured CdSnO3 and Zn doped CdSnO3 were deposited onto heated glass substrate by simple spray pyrolysis (SP) technique. Sensing elements of nonostructured CdSnO3 and Zn doped CdSnO3 were annealed at 500 0C for 1 hrs. Characterization includes a different analytical technique such as, X-ray diffaractogram (XRD), energy dispersive X-ray analysis (EDAX), Field emission scanning electron microscope (FE-SEM), Transmission electron microscope (TEM) and UV–VIS absorption spectroscopy. The average crystallite size and grain size observed from XRD and FF-SEM was found to be increased with increase in volume % of Zn in CdSnO3. The films volume 5 % of Zn in CdSnO3 was observed to be most sensitive (S = 1230) to ethanol for 500 ppm at 300 0C. The response and recovery time is 5 sec, 7 sec respectively. The results are discussed and interpreted. Keywords: Spray pyrolysis techniques, Nanostrutured Zn doped CdSnO3, ethanol gas, response and recovery time.