Baharuddin, Aainaa Aqilah and Ang, Bee Chin and Haseeb, A. S. M. A. and Wong, Yew Hoong (2021) Improvement of N-ZnO chemiresistive gas sensor toward lower detection limit of acetone and ethanol at low operating temperature. Materials Letters, 303. ISSN 0167-577X, DOI https://doi.org/10.1016/j.matlet.2021.130562.
Full text not available from this repository.Abstract
Nitrogen doped ZnO (N-ZnO) chemiresistive gas sensor was fabricated to improve lower limit of detection (LLOD). N-ZnO was fabricated by mixing ZnO with urea using ball milling method followed by annealing. Both pure ZnO and N-ZnO possess porous morphology. N-ZnO sensor showed a more improved LLOD (20 ppm) toward acetone and ethanol compared to the pure ZnO (LLOD = 1000 ppm) at 150 degrees C which is the lower limit of working temperature for both of the samples. A new understanding on interchangeable n-type and p-type behaviour of NZnO upon exposure to different acetone concentrations was also discussed in this paper.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | ZnO; Sensor; Lower limit of detection; Doping; Semiconductor |
| Subjects: | T Technology > TJ Mechanical engineering and machinery T Technology > TP Chemical technology |
| Divisions: | Faculty of Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 09 Mar 2022 07:37 |
| Last Modified: | 09 Mar 2022 07:37 |
| URI: | http://eprints.um.edu.my/id/eprint/26510 |
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