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

Journal Article · Thu Apr 24 04:00:00 EDT 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4872582· OSTI ID:22269446

Johari, Anima; Sharma, Manish ^[1]; Johari, Anoopshi ^[2]; Bhatnagar, M. C. ^[3]

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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)

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.

• OSTI ID: 22269446
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1591; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

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