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has been cited by the following article:

• TITLE: Synthesis of Tin Oxide Thick Film and Its Investigation as a LPG Sensor at Room Temperature

  AUTHORS: Tripti Shukla

  KEYWORDS: LPG Sensor; Thick Film; Sensitivity; SEM; XRD

  JOURNAL NAME: Journal of Sensor Technology, Vol.2 No.3, September 26, 2012

  ABSTRACT: Present paper reports the synthesis of SnO2, its characterization and performance as Liquefied Petroleum Gas (LPG) Sensor. XRD pattern revealed the tetragonal crystalline nature of the material. Crystallites sizes were in the range 14 - 30 nm. Tin oxide thick film was prepared by using screen printing technique. After that these were investigated through SEM. SEM image of thick-film surface was spherical in shape and porous. Further at room temperature, the film was exposed to LPG in a controlled gas chamber and variations in resistance with the concentrations of LPG were observed. The maximum value of average sensitivity of thick film was 37 MΩ/min for 5 vol. % of LPG. Sensor responses as a function of exposure and response times were also estimated and maximum sensor response were found 273 and 312 for 4 and 5 vol. % of LPG respectively.