Norfarariyanti Parimon and M. H. Mamat and M. K. Ahmad and I. B. Shameem Banu and M. Rusop (2019) Highly porous NiO nanoflower-based humidity sensor grown on seedless glass substrate via one-step simplistic immersion method. International Journal of Engineering and Advanced Technology (IJEAT), 9. pp. 5718-5722. ISSN 2249-8958
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Highly porous NiO nanoflower-based humidity sensor grown on seedless glass substrate via one-step simplistic immersion method_ABSTRACT.pdf Download (85kB) |
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Abstract
A highly porous nickel oxide (NiO) nanoflower was deposited directly onto glass substrates by the simplistic immersion method. The nanostructural property of the NiO was studied by X-ray diffraction pattern and obtained high crystal quality after annealing at 500 °Ϲ with an average crystallite size of 15.5 nm. The optical characterization was measured by ultraviolet-visible spectroscopy, with an average transmittance of 58 %. The value of 3.63 eV was estimated and confirmed as NiO bandgap energy. The current-voltage measurement result indicates that the NiO nanoflower has good electrical properties with resistance, resistivity, and conductivity value of 2.31 MΩ, 2.12 Ω.cm, and 4.71 × 10-1 S.cm-1, respectively. The NiO is capable of performing satisfactorily as humidity sensor with a sensitivity of 138 with the response and recovery time were estimated at 389 s and 172 s, respectively. Besides, this sensor has stability at a humidity level of 40-90% relative humidity.
Item Type: | Article |
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Keyword: | Glass substrate , Highly porous , Humidity sensor , Immersion method , NiO nanoflower |
Subjects: | Q Science > QD Chemistry > QD1-999 Chemistry > QD901-999 Crystallography |
Department: | FACULTY > Faculty of Engineering |
Depositing User: | SAFRUDIN BIN DARUN - |
Date Deposited: | 22 Nov 2021 07:39 |
Last Modified: | 22 Nov 2021 07:39 |
URI: | https://eprints.ums.edu.my/id/eprint/30987 |
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