Enhanced NO2 sensing using ZnO-TiO2 nanocomposite thin films
作者： Rishi Vyas , Sarla Sharma , Parul Gupta , YK Vijay , Arun K Prasad
DOI: 10.1016/J.JALLCOM.2012.11.059
关键词:
摘要: Abstract ZnO–TiO 2 nanocomposites were synthesized using a wet chemical route with concentration of 1–10% (w/w) TiO in ZnO. Spin coating was used to deposit the thin films these on glass substrate. These nanocomposite tested for NO gas detection at an operating temperature 250 °C N atmosphere (0.4 ± 0.03 mbar). The film composition ZnO–2%TiO is observed enhance signal 20 ppm by 22 times comparison pure ZnO film. sensor response above (ZnO–2%TiO ) showed significant reduction 68% time and difference between recovery 97% sensing. results are analyzed discussed light data obtained from various characterization techniques e.g. X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), current–voltage ( I – V characteristics sensing characteristics.
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