Fitriana, Fitriana and Septiani, Ni Luh Wulan and Adhika, Damar Rastri and Saputro, Adhitya Gandariyus and Nugraha, Nugraha and Yuliarto, Brian (2019) (Peer review + Similarity) Enhanced NO Gas Performance of (002)-Oriented Zinc Oxide Nanostructure Thin Films. IEEEAccess.
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Abstract
(002)-oriented ZnO nanostructure for NO gas sensing application was successfully grown on glass substrates by two-step processes, which are seeding process via dip-coating method using diethanolamine (DEA) as chelating agent and growth process via chemical bath deposition (CBD). The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Two ZnO �lm samples, named samples A and B, were fabricated without and with DEA addition in the seeding process, respectively. XRD observation results show that ZnO �lm was successfully deposited on both samples, where sample A has a random crystal orientation; while sample B has a very dominant (002) orientation. Further, the selected area electron diffraction (SAED) observation with TEM con�rmed that sample A has a random orientation indicated by a ring-shaped diffraction pattern; while sample B has a hexagonal crystalline structure diffraction pattern which is oriented towards the normal direction of the substrate surface, indicated that ZnO �lm was grown along this (002) orientation for sample B. SEM images of both samples showed that the ZnO �lm is ZnO nanorods with hexagonal wurtzite structure shape and sample A is clearly more randomly oriented than sample B. During the investigation of NO gas sensing performance, it is found that the highest response towards NO gas was occurred at a lower operating temperature of 200�C for sample B compared to a higher operating temperature of 300�C for sample A. Furthermore, sample B has a higher dynamic gas response and sensitivity than sample A. These results indicate that the (002) oriented ZnO �lm has a better performance than the randomly oriented ZnO �lm as NO gas sensor.
| Item Type: | Peer Review |
|---|---|
| Uncontrolled Keywords: | Gas sensor, nitric oxide, orientation, ZnO |
| Subjects: | 600 Technology and Applied Science > 620 Engineering > 628 Environmental Protection Engineering |
| Divisions: | Faculty of Engineering > Department of Electronics Engineering (S1) |
| Depositing User: | Fitriana Fitriana |
| Date Deposited: | 02 Mar 2021 01:37 |
| Last Modified: | 17 Mar 2021 05:17 |
| URI: | http://repository.unmuhjember.ac.id/id/eprint/8647 |
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