Heterojunction of SnO2 nanosheet/arrayed ZnO nanorods for humidity sensing
For the first time, a rutile phased tin oxide (SnO2) nanosheet was assembled onto a zinc oxide (ZnO) nanorod array to form SnO2 nanosheet/ZnO nanorod array heterostructure films (TSZR) using a two-step solution immersion method. This study offers a facile and effective path to grow a SnO2 nanosheet...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English English |
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Elsevier
2022
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| Online Access: | https://eprints.ums.edu.my/id/eprint/34857/2/FULL%20TEXT.pdf https://eprints.ums.edu.my/id/eprint/34857/1/ABSTRACT.pdf |
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| author | M.H. Mamat A.S. Ismail Norfarariyanti Parimon N. Vasimalai M.H. Abdullah M.F. Malek M.K. Yaakob M.K. Ahmad N. Nafarizal A.B. Suriani A. Mohamad M.D. Birowosuto M. Rusop |
| author_facet | M.H. Mamat A.S. Ismail Norfarariyanti Parimon N. Vasimalai M.H. Abdullah M.F. Malek M.K. Yaakob M.K. Ahmad N. Nafarizal A.B. Suriani A. Mohamad M.D. Birowosuto M. Rusop |
| author_sort | M.H. Mamat |
| collection | UMS |
| description | For the first time, a rutile phased tin oxide (SnO2) nanosheet was assembled onto a zinc oxide (ZnO) nanorod array to form SnO2 nanosheet/ZnO nanorod array heterostructure films (TSZR) using a two-step solution immersion method. This study offers a facile and effective path to grow a SnO2 nanosheet assembled layer on ZnO nanorod arrays with a varied density using a tin (II) chloride dihydrate precursor to achieve an optimum humidity sensing response through the SnO2 growth time from 1 to 5 h. The structural characteristics, electrical properties, and humidity sensing response of the heterostructure films were investigated using various characterization techniques, such as field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, high-resolution transmission electron microscopy, X-ray diffraction, atomic force microscopy, Raman spectroscopy, a two-probe current-voltage measurement, and a humidity sensing response measurement system. The synthesized ZnO nanorods have an average diameter of 90 nm, while the grown SnO2 nanosheets have an average width of 20 nm. The humidity response performance of the films demonstrates a remarkable dependence on the SnO2 nanosheet assembled layer on the ZnO nanorod array film with the best humidity sensitivity of 754.4 at room temperature obtained for the 2 h-grown SnO2 nanosheet-based 2TSZR heterostructure sample. The 2TSZR sample also exhibited good stability over a four-cycle measurement and magnified current value of the humidity sensing response at a high operating temperature up to 60 °C. These investigations reveal that the TSZR heterostructure films are promising for humidity sensing devices with high sensitivity. |
| first_indexed | 2024-03-06T03:22:08Z |
| format | Article |
| id | ums.eprints-34857 |
| institution | Universiti Malaysia Sabah |
| language | English English |
| last_indexed | 2024-03-06T03:22:08Z |
| publishDate | 2022 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | ums.eprints-348572022-11-16T01:12:42Z https://eprints.ums.edu.my/id/eprint/34857/ Heterojunction of SnO2 nanosheet/arrayed ZnO nanorods for humidity sensing M.H. Mamat A.S. Ismail Norfarariyanti Parimon N. Vasimalai M.H. Abdullah M.F. Malek M.K. Yaakob M.K. Ahmad N. Nafarizal A.B. Suriani A. Mohamad M.D. Birowosuto M. Rusop TH1-9745 Building construction For the first time, a rutile phased tin oxide (SnO2) nanosheet was assembled onto a zinc oxide (ZnO) nanorod array to form SnO2 nanosheet/ZnO nanorod array heterostructure films (TSZR) using a two-step solution immersion method. This study offers a facile and effective path to grow a SnO2 nanosheet assembled layer on ZnO nanorod arrays with a varied density using a tin (II) chloride dihydrate precursor to achieve an optimum humidity sensing response through the SnO2 growth time from 1 to 5 h. The structural characteristics, electrical properties, and humidity sensing response of the heterostructure films were investigated using various characterization techniques, such as field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, high-resolution transmission electron microscopy, X-ray diffraction, atomic force microscopy, Raman spectroscopy, a two-probe current-voltage measurement, and a humidity sensing response measurement system. The synthesized ZnO nanorods have an average diameter of 90 nm, while the grown SnO2 nanosheets have an average width of 20 nm. The humidity response performance of the films demonstrates a remarkable dependence on the SnO2 nanosheet assembled layer on the ZnO nanorod array film with the best humidity sensitivity of 754.4 at room temperature obtained for the 2 h-grown SnO2 nanosheet-based 2TSZR heterostructure sample. The 2TSZR sample also exhibited good stability over a four-cycle measurement and magnified current value of the humidity sensing response at a high operating temperature up to 60 °C. These investigations reveal that the TSZR heterostructure films are promising for humidity sensing devices with high sensitivity. Elsevier 2022 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/34857/2/FULL%20TEXT.pdf text en https://eprints.ums.edu.my/id/eprint/34857/1/ABSTRACT.pdf M.H. Mamat and A.S. Ismail and Norfarariyanti Parimon and N. Vasimalai and M.H. Abdullah and M.F. Malek and M.K. Yaakob and M.K. Ahmad and N. Nafarizal and A.B. Suriani and A. Mohamad and M.D. Birowosuto and M. Rusop (2022) Heterojunction of SnO2 nanosheet/arrayed ZnO nanorods for humidity sensing. Materials Chemistry and Physics, 288 (126436). pp. 1-16. ISSN 0254-0584 https://www.sciencedirect.com/science/article/abs/pii/S0254058422007428?dgcid=coauthor https://doi.org/10.1016/j.matchemphys.2022.126436 https://doi.org/10.1016/j.matchemphys.2022.126436 |
| spellingShingle | TH1-9745 Building construction M.H. Mamat A.S. Ismail Norfarariyanti Parimon N. Vasimalai M.H. Abdullah M.F. Malek M.K. Yaakob M.K. Ahmad N. Nafarizal A.B. Suriani A. Mohamad M.D. Birowosuto M. Rusop Heterojunction of SnO2 nanosheet/arrayed ZnO nanorods for humidity sensing |
| title | Heterojunction of SnO2 nanosheet/arrayed ZnO nanorods for humidity sensing |
| title_full | Heterojunction of SnO2 nanosheet/arrayed ZnO nanorods for humidity sensing |
| title_fullStr | Heterojunction of SnO2 nanosheet/arrayed ZnO nanorods for humidity sensing |
| title_full_unstemmed | Heterojunction of SnO2 nanosheet/arrayed ZnO nanorods for humidity sensing |
| title_short | Heterojunction of SnO2 nanosheet/arrayed ZnO nanorods for humidity sensing |
| title_sort | heterojunction of sno2 nanosheet arrayed zno nanorods for humidity sensing |
| topic | TH1-9745 Building construction |
| url | https://eprints.ums.edu.my/id/eprint/34857/2/FULL%20TEXT.pdf https://eprints.ums.edu.my/id/eprint/34857/1/ABSTRACT.pdf |
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