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Journal of Materials Science: Materials in Electronics

High response to sub-ppm level of NO2 with 50%RH of ZnO sensor obtained by an auto-combustion method

  • 20-07-2020
Published in:
Authors
M. Benamara
J. Massoudi
H. Dahman
E. Dhahri
L. El Mir
A. Ly
M. Debliquy
D. Lahem
Published in
Journal of Materials Science: Materials in Electronics | Issue 17/2020

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Abstract

Pure zinc oxide was prepared by a simple auto-combustion method. The microstructure and morphological proprieties, of the prepared sample, were investigated by XRD, XPS, and SEM characterizations which indicated that the ZnO nanoparticles have a hexagonal wurtzite structure with space group P63mc. The average size estimated by Willams-Hall exhibits to be 61.45 nm which is in good agreement with that estimated by the SEM image (62 nm). The absorbance spectra indicated a high absorbance in the UV range and the gap energy, estimated by Tauc’s model, was 3.17 eV. The sensor was prepared by spraying the suspension of ZnO nanopowders on an alumina substrate with pre-deposited gold-interdigitated electrodes. The fabricated sensors exhibited a high response (ΔR/R = 208) and acceptable response/recovery times (5/2.5 min) to 1 ppm of NO2 at low operational temperature (150 °C) in the dark and 50%RH.

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previous article Growth and characterization of hydrophobic anti-reflection CaF2 films
next article Solid-state synthesis of heterogeneous Ni0.5Cu0.5-xZnxFe2O4 spinel oxides with controlled morphology and tunable dielectric properties
Title
High response to sub-ppm level of NO2 with 50%RH of ZnO sensor obtained by an auto-combustion method
Authors
M. Benamara
J. Massoudi
H. Dahman
E. Dhahri
L. El Mir
A. Ly
M. Debliquy
D. Lahem
Publication date
20-07-2020
Publisher
Springer US
Published in
Journal of Materials Science: Materials in Electronics / Issue 17/2020
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-020-03981-9
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