Affordable Access

Aerosol assisted chemical vapour deposition of nanostructured ZnO thin films for NO2 and ethanol monitoring

Authors
  • Ding, Jian
  • Chen, Shuqun
  • Han, Ning
  • Shi, Yi
  • Hu, Peng
  • Li, Hongyi
  • Wang, Jinshu
Publication Date
Jul 01, 2020
Source
Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
Keywords
License
Unknown
External links

Abstract

Gas response control through structural and defect engineering in metal oxides are critical approaches to realize high performance sensors. Herein, we present the fabrication of ZnO thin films containing nanosized structures and high concentration of zinc interstitials for NO2 and ethanol monitoring. The target materials were fabricated by aerosol assisted chemical vapour deposition (AACVD) method on ceramic and glass substrates, and were characterized by complementary analytical techniques. The obtained ZnO nanoparticulate and nanopyramidal thin films yielded an outstanding response of similar to 41 to 1 ppm NO2 and similar to 236 towards 100 ppm ethanol, respectively. The reasons accounting for such an enhancement were revealed by the surface-depletion model in ZnO and the chemisorption energies of oxygen molecules on Zn-i-enriched crystal facets.

Report this publication

Statistics

Seen <100 times