| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 746655 | Sensors and Actuators B: Chemical | 2008 | 4 Pages |
Abstract
A NO2 gas sensor of carbon nanotubes (CNT) array was fabricated by a dielectrophoretic method. It is the first report of 50 ppb level detection operating at room temperature without a supplementary assistance of a heating system, vacuum environment, metal decoration, or additional film coating. The as-deposited CNTs on Pt electrodes by dropping of a CNT cropped solution provided good contact formation without post contact treatment. The bias voltage modulation improved the sensor performance by controlling the Schottky barrier potential. It is highly sensitive NO2 detection at room temperature, which may benefit to reduce the fabrication steps and cost as well.
Related Topics
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Authors
Jong-Hong Lee, Joondong Kim, Hee Won Seo, Jin-Won Song, Eung-Sug Lee, Mooncheol Won, Chang-Soo Han,