Journal
MATERIALS LETTERS
Volume 206, Issue -, Pages 18-21Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2017.06.041
Keywords
Gas sensor; Metallic carbon nanotubes electrode; ZnO nanowires; NO2; Spray-deposition
Funding
- National Natural Science Foundation of China [61401251, 51672154, 51372130]
- State Key Laboratory of Low-Dimensional Quantum Physics [KF2015017]
- Natural Science Foundation of Jiangsu Province [BK20160328]
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A novel room-temperature (RT) resistive-type NO2 gas sensor was developed by utilizing ZnO nanowires as sensitive materials and metallic single-walled carbon nanotubes (m-SWCNT) as electrodes where both of them were fabricated by spray deposition process. The ZnO/m-SWCNT sensing devices showed better sensing response to NO2, as compared to traditional ZnO/Au sensing devices, which possess opposite sensing response. This can be attributed to different Schottky junction barrier characteristics at ZnO/m-SWCNT interface. This work paves the way to explore effective sensing and electrodes for future novel NO2 gas sensors in practical and rigid gas sensing system applications. (C) 2017 Published by Elsevier B.V.
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