Abstract
Two types of carbon nanotubes [single walled nanotubes (SWCNTs) and multi walled carbon nanotubes (MWCNTs)] are deposited on porous silicon by the drop casting technique. Upon exposure to test gas mixing ratio 3% NO2, the sensitivity response results show that the SWCNTs’ sensitivity reaches to 79.8%, where MWCNTs’ is 59.6%. The study shows that sensitivity response of the films increases with an increase in the operating temperature up to 200° and 150° for MWCNTs and SWCNTs. The response and recovery time is about 19 s and 54 s at 200° for MWCNTs, respectively, and 20 s and 56 s at 150° for SWCNTs.
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Naje, A.N., Ibraheem, R.R. & Ibrahim, F.T. Parametric Analysis of NO2 Gas Sensor Based on Carbon Nanotubes. Photonic Sens 6, 153–157 (2016). https://doi.org/10.1007/s13320-016-0304-1
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DOI: https://doi.org/10.1007/s13320-016-0304-1