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Title: Ageing effect in spray pyrolysed B:SnO{sub 2} thin films for LPG sensing

For LPG sensing, boron doped (0.2 to 0.8 wt. %) polycrystalline tin oxide thin films are deposited by spray pyrolysis in the temperature range 325 - 430 °C. Sensor response of 56 % is achieved for 1000 ppm of LPG, at an operating temperature of 350 °C. The effects of ageing under ambient conditions on the sensor response are investigated for a storage period of six years. Ageing increases the film resistance but the gas response is lowered. XRD, SEM, FESEM, FTIR and XPS are utilized for structural, morphological and compositional charaterisations.
Authors:
;  [1]
  1. Regional Research Centre in Physics, Mar Athanasius College, Kothamangalam, Kerala 686 666 (India)
Publication Date:
OSTI Identifier:
22308047
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1620; Journal Issue: 1; Conference: Optics 14: International conference on optics: Light and its interactions with matter, Calicut, Kerala (India), 19-21 Mar 2014; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BORON; DOPED MATERIALS; FOURIER TRANSFORMATION; INFRARED SPECTRA; POLYCRYSTALS; PYROLYSIS; SCANNING ELECTRON MICROSCOPY; SENSORS; TEMPERATURE DEPENDENCE; THIN FILMS; TIN OXIDES; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY