期刊
THIN SOLID FILMS
卷 520, 期 13, 页码 4465-4469出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2012.02.071
关键词
Single wall nanotubes; Gas sensors; Bundles; Nitrogen dioxide; Dispersion; Raman spectroscopy
类别
资金
- MESR (Ministere de l'enseignement superieur et de la recherche)
- Region Auvergne
In this article, carbon nanotube (CNT)-based sensors have been prepared using dispersion techniques. Sensors are obtained from a dispersion of CNTs using either chloroform as a solvent or sodium dodecylbenzene sulfonate as a surfactant. These sensors are prepared by drop-cast deposition of the solutions on interdigitated electrodes. The organic solvent processing leads to CNT layers where carbon nanotubes are obtained as larger bundles, whereas smaller bundles and individual tubes are predominantly formed in the surfactant processing. Under gas exposure (NO2), both sensors respond to low gas concentrations; however, the sensing layers composed of larger bundles of CNTs present a slightly different behaviour (in terms of rapid stabilisation and sensitivity) compared to those made of individual CNTs. (C) 2012 Elsevier B.V. All rights reserved.
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