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Int. J. Electroactive Mater. 5 (2017) 6-12

Liquefied Petroleum Gas Detection Using SnO2, PANI-SnO2 and Ag-SnO2 Composite Film Fabricated by Chemical Route

RAKESH SONKER1*, Saroj Radheyshyam Sabhajeet2, B.C. Yadav2, Rahul Johari3

1Department of Physics and Astrophysics, University of Delhi, DELHI, Delhi, India
2Applied Physics, Babasaheb Bhimrao Ambedkar University, Lucknow, LUCKNOW, Uttar Pradesh, India
3Applied Sciences and Humanities, Jamia Millia Islamia, New Delhi, Delhi, Delhi, India

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Abstract : In the present work, chemical route was used to deposit PANI and Ag doped SnO2 thin films. After careful study, SnO2 thin films with suitable growth conditions were selected for probing their response towards LPG. The prepared sensor structures, 1% PANI doped SnO2 (SnO2-PANI) based sensor was found to give high sensing response of about 67 towards concentration 1000 ppm of LPG gas at low temperature with response time (~ 1000 sec) and recovery time (~ 900 sec) time respectively. The structural, morphological and optical properties of the prepared sensor structures have been studied by X-ray diffraction (XRD), Fourier Transform infrared spectroscopy (FTIR) and Scanning Electron Microscope (SEM).

Keywords : Gas sensors,SnO2,PANI, Ag doped SnO2,Thin Film,