Room-temperature ammonia sensor based on ZnO nanorods deposited on ST-cut quartz surface acoustic wave devices

Li, Wei, Guo, Yuanjun, Tang, Yong-Liang, Zu, Xiao-Tao, Ma, Jin-Yi, Wang, Lu and Fu, Yong Qing (2017) Room-temperature ammonia sensor based on ZnO nanorods deposited on ST-cut quartz surface acoustic wave devices. Sensors, 17 (5). p. 1142. ISSN 1424-8220

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Official URL: http://dx.doi.org/10.3390/s17051142

Abstract

Using a seed layer-free hydrothermal method, ZnO nanorods (NRs) were deposited on ST-cut quartz surface acoustic wave (SAW) devices of ammonia sensing at room-temperature. For a comparison, a ZnO film layer of 30 nm thick was also coated onto ST-cut quartz SAW device using a sol–gel and spin-coating technique. The ammonia sensing results showed that the sensitivity, repeatability and stability of the ZnO NRs coated SAW device were superior to those of the ZnO film coated SAW device due to the large surface-to-volume ratio of the ZnO NRs.

Item Type: Article
Uncontrolled Keywords: NH3 sensor, SAW device, ZnO nanorods, seed layer-free growth
Subjects: H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Physics and Electrical Engineering
Depositing User: Paul Burns
Date Deposited: 03 May 2017 12:19
Last Modified: 22 May 2017 16:21
URI: http://nrl.northumbria.ac.uk/id/eprint/30675

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