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Title: Structural, optical and ethanol sensing properties of Cu-doped SnO{sub 2} nanowires

In present work, one-dimensional nanostructure of Cu-doped Tin oxide (SnO{sub 2}) was synthesized by using thermal evaporation method in a tubular furnace under Nitrogen (N{sub 2}) ambience. The growth was carried out at atmospheric pressure. SEM and TEM images reveal the growth of wire-like nanostructures of Cu-doped SnO{sub 2} on Si substrate. The XRD analysis confirms that the synthesized SnO{sub 2} nanowires have tetragonal rutile structure with polycrystalline nature and X-ray diffraction pattern also showed that Cu gets incorporated into the SnO{sub 2} lattice. EDX spectra confirm the doping of Cu into SnO{sub 2} nanowires and atomic fraction of Cu in nanowires is ∼ 0.5 at%. The Vapor Liquid Solid (VLS) growth mechanism for Cu-doped SnO{sub 2} nanowires was also confirmed by EDX spectra. The optical properties of as grown Cu-doped SnO{sub 2} nanowires were studied by using UV-vis spectra which concludes the band gap of about 3.7 eV. As synthesized single Cu-doped SnO{sub 2} nanowire based gas sensor exhibit relatively good performance to ethanol gas. This sensing behaviour offers a suitable application of the Cu-doped SnO{sub 2} nanowire sensor for detection of ethanol gas.
Authors:
;  [1] ;  [2] ;  [3]
  1. Center for Applied Research in Electronics (CARE), IIT Delhi, Hauz khas, New Delhi-110016 (India)
  2. THDC Institute of Hydropower Institute of Engineering and Technology, Tehri-249124 (India)
  3. Physics Department, IIT Delhi, Hauz khas, New Delhi-110016 (India)
Publication Date:
OSTI Identifier:
22269446
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1591; Journal Issue: 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; ATMOSPHERIC PRESSURE; DETECTION; DOPED MATERIALS; ETHANOL; EVAPORATION; LIQUIDS; OPTICAL PROPERTIES; POLYCRYSTALS; QUANTUM WIRES; RUTILE; SCANNING ELECTRON MICROSCOPY; SENSORS; SOLIDS; SUBSTRATES; TIN OXIDES; TRANSMISSION ELECTRON MICROSCOPY; ULTRAVIOLET SPECTRA; X-RAY DIFFRACTION