Gas sensors based on doped-CNT/SnO2 composites for NO2 detection at room temperature

Autor:	R. Leghrib, Alexandre Felten, Jean-Jacques Pireaux, Eduard Llobet
Rok vydání:	2011
Předmět:	Nanostructure Materials science Heteroatom Doping Metals and Alloys chemistry.chemical_element Surfaces and Interfaces Atmospheric temperature range Nitrogen Semimetal Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry Materials Chemistry Composite material Boron Carbon
Zdroj:	Thin Solid Films. 520:966-970
ISSN:	0040-6090
Popis:	R. Leghrib, A. Felten, J.J. Pireaux, E. Llobet For the first time nitrogen or boron doped carbon nanotubes were added into a SnO matrix to develop a new hybrid CNTs/SnO gas sensors. The hybrid sensor is utilised to detect low ppb concentrations of NO in air, by measuring resistance changes of thin CNTs/SnO films. The tests are performed at room temperature. For comparison, pure SnO and N or B-substituted CNT sensors are also examined. Comparative gas sensing results reveal that the CNTs/SnO hybrid sensors exhibit much higher response towards NO , at least by a factor of 10, and good baseline recovery properties at room temperature than the blank SnO and the N or B-substituted CNT sensors. This finding shows that doping SnO with low quantity of CNTs doped with heteroatoms can dramatically improve sensitivity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cce2bad04c86ec1f9a37551f048a1447 https://doi.org/10.1016/j.tsf.2011.04.186 Zobrazit plný text záznamu Full Text from ScienceDirect