Abstract
Gas sensor operating in part-per billion (ppb) range is
required for environmental monitoring of nitrogen
dioxide. Currently there is a lack of cheap sensors,
which can operate in this concentration range. In this
work, an ultrasensitive gas sensor based on epitaxial
graphene on SiC has been proposed. The sensor exhibits a
strong and reproducible response to nitrogen dioxide
(NO2) for concentrations in air down to 1 ppb. A
prototype of a portable device for environmental
monitoring which utilizes a combination of sample gas
exposure at room temperature and sensor's recovery at
elevated temperature has been made. Prototype allows fast
and reproducible measurements of NO2 concentration in the
typical range for environmental pollution (5 ppb-50 ppb).
| Original language | English |
|---|---|
| Pages (from-to) | 1054-1060 |
| Journal | Sensors and Actuators B: Chemical |
| Volume | 236 |
| DOIs | |
| Publication status | Published - 2016 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- graphene
- gas sensor
- nitrogen dioxide
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Cite this
Novikov, S., Lebedeva, N., Satrapinski, A., Walden, J., Davydov, V., & Lebedev, A. (2016). Graphene based sensor for environmental monitoring of NO2. Sensors and Actuators B: Chemical, 236, 1054-1060. https://doi.org/10.1016/j.snb.2016.05.114