Abstract:
The spray pneumatic method has been successfully employed for the preparation of polycrystalline NiO-doped ZnO thin films. The effect of NiO content (0, 1, 2, 3, and 6 at.%) is studied on structural, optical, and electrical properties of NiO-doped ZnO thin films. The thin films were successfully deposited on a glass substrate at 450∘C using the organic solar heater. XRD patterns of NiO-doped ZnO thin films indicate that the obtained ZnO thin films are polycrystalline with (100), (002), and (101) highest peaks of ZnO phase. However, α-Ni(OH)2 and β-Ni(OH)2 were observed at 6 and 3 at.% NiO, respectively. The crystal structure was improved for doped thin films, the crystallite size decreased by increasing the NiO content up to 6 at.% NiO. All thin films have a high optical transmission in the visible region of about 85%. The optical band gap energy decreased from 3.26 eV for 0% to 3.34 eV for 1 at.%, and further decreased to 3.27 eV for 6 at.% NiO. The thin film deposited with 3 at.% NiO has the lowest value of Urbach energy (0.091 eV). The electrical conductivity of the NiO-doped ZnO films increased greatly from 0.016 (Ω⋅ cm)−1 for 0% NiO to 0.042 (Ω⋅ cm)−1 for 3 at.% NiO. It can be noted that the deposited film after 3 at.% NiO is a p-type semiconductor.
Citation:
Y. Aoun, R. Meneceur, S. Benramache, B. Maaoui, “Sprayed NiO-doped p-type transparent ZnO thin films suitable for gas-sensing devices”, Fizika Tverdogo Tela, 62:1 (2020), 93; Phys. Solid State, 62:1 (2020), 131–136
\Bibitem{AouMenBen20}
\by Y.~Aoun, R.~Meneceur, S.~Benramache, B.~Maaoui
\paper Sprayed NiO-doped $p$-type transparent ZnO thin films suitable for gas-sensing devices
\jour Fizika Tverdogo Tela
\yr 2020
\vol 62
\issue 1
\pages 93
\mathnet{http://mi.mathnet.ru/ftt8527}
\elib{https://elibrary.ru/item.asp?id=42571190}
\transl
\jour Phys. Solid State
\yr 2020
\vol 62
\issue 1
\pages 131--136
\crossref{https://doi.org/10.1134/S1063783420010060}
Linking options:
https://www.mathnet.ru/eng/ftt8527
https://www.mathnet.ru/eng/ftt/v62/i1/p93
This publication is cited in the following 5 articles:
Rajesh. K, Nagaraju. Pothukanuri, M.V. Ramana Reddy, “Studies on pure and Zn doped NiO nanostructured thin films for enhanced ammonia gas sensing applications”, Chemical Physics Impact, 8 (2024), 100397
L.H. Kathwate, “In-doped ZnO Films Deposited by Modified SILAR Method for Enhanced Ethanol Gas Sensor Application”, Ceramics International, 2024
“Impact of Deposition Rate on the Structural, Optical, and Electrical Properties of Zinc Oxide (ZnO) Thin Films Prepared by Solar Spray Pyrolysis Method”, Nanosistemi, Nanomateriali, Nanotehnologii, 19:1 (2021)
B. Gharbi, A. Taabouche, M. Brella, R. Gheriani, Y. Bouachiba, A. Bouabellou, F. Hanini, S. Barouk, H. Serrar, B. Rahal, “Spray pyrolysis synthesized and ZnO–NiO nanostructured thin films analysis with their nanocomposites for waveguiding applications”, Semiconductors, 55:1 (2021), 37–43
B. Maaoui, Y. Aoun, S. Benramache, A. Nid, R. Far, A. Touati, “Synthesis and Characterization of Physical Properties of the NiO Thin Films by Various Concentrations”, Advances in Materials Science, 20:3 (2020), 79