ZnO-NiO thin films containing Au nanoparticles for CO optical sensing

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DOIResolve DOI: http://doi.org/10.1166/sl.2011.1571
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TypeArticle
Journal titleSensor letters
Volume9
Issue2
Pages600604; # of pages: 5
SubjectAu nanoparticles; nanocomposite film; optical sensor; ZnO; NiO
AbstractZnO-NiO sol-gel thin films doped with Au nanoparticles have been prepared with NiO amounts ranging from 0 percent to 30 percent. X-ray diffraction, UV-visible spectroscopy and electron microscopy confirm the crystallization of Au, ZnO and NiO, and the high residual porosity of the nanocomposites. Optical sensor functionality towards CO detection has been presented, showing an increase in sensitivity with NiO amount when the wavelength of analysis is far from the Au surface plasmon resonance peak, while in the 500-750 nm range there is a strong wavelength dependence of the response with a decrease in sensitivity for a certain range of operative frequencies. This allows tuning of the sensor performance, and makes this material useful for multiple gases analysis.
Publication date
PublisherAmerican scientific publishers
LanguageEnglish
AffiliationNRC Institute for Chemical Process and Environmental Technology; National Research Council Canada
Peer reviewedYes
NRC number52181
NPARC number19335214
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Record identifier6ee316d2-454c-45f0-ac0d-2a1999a1305e
Record created2012-01-27
Record modified2016-05-09
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