ZnO nanobelt based conductometric H2 and NO2 gas sensors

Sadek, A, Wlodarski, W, Kalantar-Zadeh, K and Choopun, S 2005, 'ZnO nanobelt based conductometric H2 and NO2 gas sensors', in Proceedings of the Fourth IEEE Sensors Conference, Irvine, CA, 30 October - 3 November 2005.

Document type: Conference Paper
Collection: Conference Papers

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Title ZnO nanobelt based conductometric H2 and NO2 gas sensors
Author(s) Sadek, A
Wlodarski, W
Kalantar-Zadeh, K
Choopun, S
Year 2005
Conference name IEEE Sensors Conference
Conference location Irvine, CA
Conference dates 30 October - 3 November 2005
Proceedings title Proceedings of the Fourth IEEE Sensors Conference
Publisher IEEE
Place of publication California
Abstract Conductometric H2 and NO2 gas sensors based on single-crystalline ZnO nanobelt sensitive layers have been developed. These layers were deposited using a rf magnetron sputterer. TEM and SEM characterization methods were employed to study the morphology of the nanobelts. These sensors were exposed to H2 and NO2 gases at operating temperatures between 225degC and 420degC. Study showed that sensors responded with highest magnitude at above 300degC. The fastest response and recovery times, with greater repeatability occurred at 385degC and 350degC for H2 and NO2 gases, respectively. Sensor with ZnO nanobelts has a much lower optimum operational temperature than that of conductometric sensors with other forms of ZnO crystal layers.
Subjects Nanomaterials
DOI - identifier 10.1109/ICSENS.2005.1597952
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