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.
| Original language | English |
|---|---|
| Pages (from-to) | 628-631 |
| Number of pages | 4 |
| Journal | Sensors and Actuators, B: Chemical |
| Volume | 129 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2008 Feb 22 |
| Externally published | Yes |
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Keywords
- 50 ppb NO detection
- Carbon nanotube
- Dielectrophoretic
- Room temperature
- Schottky barrier
ASJC Scopus subject areas
- Analytical Chemistry
- Electrochemistry
- Electrical and Electronic Engineering
Cite this
Bias modulated highly sensitive NO2 gas detection using carbon nanotubes. / Lee, Jong Hong; Kim, Joondong; Seo, Hee Won; Song, Jin Won; Lee, Eung Sug; Won, Mooncheol; Han, Chang-Soo.
In: Sensors and Actuators, B: Chemical, Vol. 129, No. 2, 22.02.2008, p. 628-631.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Bias modulated highly sensitive NO2 gas detection using carbon nanotubes
AU - Lee, Jong Hong
AU - Kim, Joondong
AU - Seo, Hee Won
AU - Song, Jin Won
AU - Lee, Eung Sug
AU - Won, Mooncheol
AU - Han, Chang-Soo
PY - 2008/2/22
Y1 - 2008/2/22
N2 - 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.
AB - 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.
KW - 50 ppb NO detection
KW - Carbon nanotube
KW - Dielectrophoretic
KW - Room temperature
KW - Schottky barrier
UR - http://www.scopus.com/inward/record.url?scp=38949104821&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=38949104821&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2007.09.045
DO - 10.1016/j.snb.2007.09.045
M3 - Article
AN - SCOPUS:38949104821
VL - 129
SP - 628
EP - 631
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
SN - 0925-4005
IS - 2
ER -