Abstract
In the present work, we have synthesized uniformly distributed single-wall carbon nanotube (SWCNT) networks with a selective diameter suitable for gas sensing device. The SWCNT networks have been synthesized on 2-nm-thick iron (Fe) catalyst-coated silicon (Si) substrates by Plasma-Enhanced Chemical Vapor Deposition (PECVD). The as-grown SWCNTs were characterized by field emission scanning electron microscopy, high-resolution transmission electron microscopy, and Raman spectroscopy techniques. Using SWCNT network, the sensitivity of ammonia (NH3) gases/vapors was recognized by their surface adsorption and desorption responses. The response curve was observed from the SWCNT network, which is due to a change in the resistance upon exposure to NH3 gas.
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Acknowledgements
This project was funded by the Saudi Basic Industries Corporation (SABIC) and the Deanship of Scientific Research (DSR) at King Abdulaziz University, Jeddah, under Grant No. (S-17-97-37). The authors thank SABIC and DSR for technical and financial support.
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Alvi, M.A., Al-Ghamdi, A.A. & Khan, S.A. Selective and uniform growth of single-wall carbon nanotubes (SWCNTs) for gas sensing application. Appl. Phys. A 123, 170 (2017). https://doi.org/10.1007/s00339-017-0804-x
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DOI: https://doi.org/10.1007/s00339-017-0804-x