Influence of annealing temperature on the sensitivity of nickel oxide nanosheet films in humidity sensing applications
Nickel oxide (NiO) nanosheet films were successfully grown onto NiO seed-coated glass substrates at different annealing temperatures for humidity sensing applications. NiO seed layers and NiO nanosheet films were prepared using a sol-gel spin coating and sonicated sol-gel immersion techniques, respe...
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| Format: | Article |
| Language: | English English |
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Institute of Advanced Engineering and Science (IAES)
2020
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| Online Access: | https://eprints.ums.edu.my/id/eprint/30990/1/Influence%20of%20annealing%20temperature%20on%20the%20sensitivity%20of%20nickel%20oxide%20nanosheet%20films%20in%20humidity%20sensing%20applications_ABSTRACT.pdf https://eprints.ums.edu.my/id/eprint/30990/2/Influence%20of%20annealing%20temperature%20on%20the%20sensitivity%20of%20nickel%20oxide%20nanosheet%20films%20in%20humidity%20sensing%20applications.pdf |
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| author | Norfarariyanti Parimon M. H. Mamat A. S. Ismail I. B. Shameem Banu M. K. Ahmad A. B. Suriani M. Rusop |
| author_facet | Norfarariyanti Parimon M. H. Mamat A. S. Ismail I. B. Shameem Banu M. K. Ahmad A. B. Suriani M. Rusop |
| author_sort | Norfarariyanti Parimon |
| collection | UMS |
| description | Nickel oxide (NiO) nanosheet films were successfully grown onto NiO seed-coated glass substrates at different annealing temperatures for humidity sensing applications. NiO seed layers and NiO nanosheet films were prepared using a sol-gel spin coating and sonicated sol-gel immersion techniques, respectively. The properties of NiO nanosheet films at as-deposited, 300 ℃, and 500 ℃-annealed were examined by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), ultraviolet-visible (UV-vis) spectroscopy, and humidity sensor measurement system. The XRD patterns demonstrate that the grown NiO films have crystalline cubic structures at temperature of 300 ℃ and 500 ℃. The FESEM images show that the large porous nanosheet network spread over the layers as the annealing temperature increased. The UV-vis spectra revealed that all the nanosheet films have the average transmittance below than 50% in the visible region, with absorption edges ~ 350 nm. The optical band gap energy was evaluated in ranges of 3.39 to 3.61 eV. From the obtained humidity sensing results, it shows that 500 ℃-annealed film exhibited the best sensitivity of 257, as well as the slowest response time, and the fastest recovery time compared with others. |
| first_indexed | 2024-03-06T03:11:51Z |
| format | Article |
| id | ums.eprints-30990 |
| institution | Universiti Malaysia Sabah |
| language | English English |
| last_indexed | 2024-03-06T03:11:51Z |
| publishDate | 2020 |
| publisher | Institute of Advanced Engineering and Science (IAES) |
| record_format | dspace |
| spelling | ums.eprints-309902021-11-22T00:07:21Z https://eprints.ums.edu.my/id/eprint/30990/ Influence of annealing temperature on the sensitivity of nickel oxide nanosheet films in humidity sensing applications Norfarariyanti Parimon M. H. Mamat A. S. Ismail I. B. Shameem Banu M. K. Ahmad A. B. Suriani M. Rusop TK7800-8360 Electronics Nickel oxide (NiO) nanosheet films were successfully grown onto NiO seed-coated glass substrates at different annealing temperatures for humidity sensing applications. NiO seed layers and NiO nanosheet films were prepared using a sol-gel spin coating and sonicated sol-gel immersion techniques, respectively. The properties of NiO nanosheet films at as-deposited, 300 ℃, and 500 ℃-annealed were examined by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), ultraviolet-visible (UV-vis) spectroscopy, and humidity sensor measurement system. The XRD patterns demonstrate that the grown NiO films have crystalline cubic structures at temperature of 300 ℃ and 500 ℃. The FESEM images show that the large porous nanosheet network spread over the layers as the annealing temperature increased. The UV-vis spectra revealed that all the nanosheet films have the average transmittance below than 50% in the visible region, with absorption edges ~ 350 nm. The optical band gap energy was evaluated in ranges of 3.39 to 3.61 eV. From the obtained humidity sensing results, it shows that 500 ℃-annealed film exhibited the best sensitivity of 257, as well as the slowest response time, and the fastest recovery time compared with others. Institute of Advanced Engineering and Science (IAES) 2020 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/30990/1/Influence%20of%20annealing%20temperature%20on%20the%20sensitivity%20of%20nickel%20oxide%20nanosheet%20films%20in%20humidity%20sensing%20applications_ABSTRACT.pdf text en https://eprints.ums.edu.my/id/eprint/30990/2/Influence%20of%20annealing%20temperature%20on%20the%20sensitivity%20of%20nickel%20oxide%20nanosheet%20films%20in%20humidity%20sensing%20applications.pdf Norfarariyanti Parimon and M. H. Mamat and A. S. Ismail and I. B. Shameem Banu and M. K. Ahmad and A. B. Suriani and M. Rusop (2020) Influence of annealing temperature on the sensitivity of nickel oxide nanosheet films in humidity sensing applications. Indonesian Journal of Electrical Engineering and Computer Science, 18. pp. 284-292. ISSN 2502-4752 (P-ISSN) , 2502-4760 (E-ISSN) http://ijeecs.iaescore.com/index.php/IJEECS/article/view/21119 http://doi.org/10.11591/ijeecs.v18.i1.pp284-292 http://doi.org/10.11591/ijeecs.v18.i1.pp284-292 |
| spellingShingle | TK7800-8360 Electronics Norfarariyanti Parimon M. H. Mamat A. S. Ismail I. B. Shameem Banu M. K. Ahmad A. B. Suriani M. Rusop Influence of annealing temperature on the sensitivity of nickel oxide nanosheet films in humidity sensing applications |
| title | Influence of annealing temperature on the sensitivity of nickel oxide nanosheet films in humidity sensing applications |
| title_full | Influence of annealing temperature on the sensitivity of nickel oxide nanosheet films in humidity sensing applications |
| title_fullStr | Influence of annealing temperature on the sensitivity of nickel oxide nanosheet films in humidity sensing applications |
| title_full_unstemmed | Influence of annealing temperature on the sensitivity of nickel oxide nanosheet films in humidity sensing applications |
| title_short | Influence of annealing temperature on the sensitivity of nickel oxide nanosheet films in humidity sensing applications |
| title_sort | influence of annealing temperature on the sensitivity of nickel oxide nanosheet films in humidity sensing applications |
| topic | TK7800-8360 Electronics |
| url | https://eprints.ums.edu.my/id/eprint/30990/1/Influence%20of%20annealing%20temperature%20on%20the%20sensitivity%20of%20nickel%20oxide%20nanosheet%20films%20in%20humidity%20sensing%20applications_ABSTRACT.pdf https://eprints.ums.edu.my/id/eprint/30990/2/Influence%20of%20annealing%20temperature%20on%20the%20sensitivity%20of%20nickel%20oxide%20nanosheet%20films%20in%20humidity%20sensing%20applications.pdf |
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