1Department of Physics, Institute of Science, Madam Kama Road, Fort Mumbai 400032, India
2Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune 411 008, India
3Department of Physics, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur 440033, India
Adv. Mater. Lett., 2016, 7 (4), pp 330-336
DOI: 10.5185/amlett.2016.6137
Publication Date (Web): Mar 07, 2016
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We report investigations on resistive material SnO2: Cu (9 wt. %) evaluated and optimized for the application of gas sensor. SnO2: Cu has been thoroughly characterized by using X-ray photoelectron spectroscopy (XPS). The deconvolution of XPS spectra confirms the existing surface reactive species in the form of states of the metal orbital and the presence of multiple pathways for the detection of CO vis-à-vis sintering temperature effect. Enhanced CO pickup at the sintering temperature of 650 0C (wide range and low sensitivity) and 750 0C (short range and high sensitivity) has been observed. The CO sensing and XPS data correlates well along with the nonconventional use of variation in average XPS background intensity of general scan seems to be related to optimized sensitivity conditions of various gases.
Resistive material, SnO2, sintering temperature, X-ray photoelectron spectroscopy.
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