title: Nanostructured tin oxide films: Physical synthesis, characterization, and gas sensing properties.
abstract: Nanostructured tin oxide (SnO2) films are synthesized using physical method i.e. thermal evaporation and are further characterized with X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, and atomic force microscopy measurement techniques for confirming its structure and morphology. The chemiresistive properties of SnO2films are studied towards different oxidizing and reducing gases where these films have demonstrated considerable selectivity towards oxidizing nitrogen dioxide (NO2) gas with a maximum response of 403% to 100ppm @200°C, and fast response and recovery times of 4s and 210s, respectively, than other test gases. In addition, SnO2films are enabling to detect as low as 1ppm NO2gas concentration @200°C with 23% response enhancement. Chemiresistive performances of SnO2films are carried out in the range of 1-100ppm and reported. Finally, plausible adsorption and desorption reaction mechanism of NO2gas molecules with SnO2film surface has been thoroughly discussed by means of an impedance spectroscopy analysis.
authors.affiliation: Functional Materials Research Laboratory, School of Physical Sciences, Solapur University, Solapur 413255, MS, India.
authors.forename: S M
authors.initials: SM
authors.lastname: Ingole
authors.affiliation: College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Shenzhen University, Shenzhen 518060, PR China.
authors.forename: S T
authors.initials: ST
authors.lastname: Navale
authors.affiliation: Functional Materials Research Laboratory, School of Physical Sciences, Solapur University, Solapur 413255, MS, India.
authors.forename: Y H
authors.initials: YH
authors.lastname: Navale
authors.affiliation: Functional Materials Research Laboratory, School of Physical Sciences, Solapur University, Solapur 413255, MS, India.
authors.forename: D K
authors.initials: DK
authors.lastname: Bandgar
authors.affiliation: College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Shenzhen University, Shenzhen 518060, PR China.
authors.forename: F J
authors.initials: FJ
authors.lastname: Stadler
authors.affiliation: School of Physical Sciences, SRTM University, Nanded, MS, India.
authors.forename: R S
authors.initials: RS
authors.lastname: Mane
authors.affiliation: Technical Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India.
authors.forename: N S
authors.initials: NS
authors.lastname: Ramgir
authors.affiliation: Technical Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India.
authors.forename: S K
authors.initials: SK
authors.lastname: Gupta
authors.affiliation: National Physical Laboratory, New Delhi, India.
authors.forename: D K
authors.initials: DK
authors.lastname: Aswal
authors.affiliation: Functional Materials Research Laboratory, School of Physical Sciences, Solapur University, Solapur 413255, MS, India. Electronic address: drvbpatil@gmail.com.
authors.forename: V B
authors.initials: VB
authors.lastname: Patil
keywords: Impedance spectroscopy; NO(2) sensor; Structure and morphology; Thermal evaporation; Tin oxide