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Title: Graphene/mica based ammonia gas sensors
Authors: Ben Aziza, Zeineb
Zhang, Qing
Baillargeat, Dominique
Keywords: DRNTU::Science::Physics
Issue Date: 2014
Source: Ben Aziza, Z., Zhang, Q., & Baillargeat, D. (2014). Graphene/mica based ammonia gas sensors. Applied physics letters, 105(25).
Series/Report no.: Applied physics letters
Abstract: In this paper, graphene/mica and graphene/SiO2 based ammonia gas sensors are compared. It is found that adsorbed NH3 molecules result in up-shifting of the Fermi level in graphene, leading to a significant increase in graphene resistance. In comparison with SiO2 supporting substrate, the mica supporting substrate is found to induce more p-doping in graphene, in favour of NH3 molecule adsorption, yielding a high sensitivity. These findings suggest that the substrate plays an important role in mediating the interaction between graphene and NH3 molecules and that mica can be an excellent underlying substrate for graphene for ammonia gas detection.
DOI: 10.1063/1.4905039
Rights: © 2014 AIP Publishing LLC. This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of AIP Publishing LLC. The paper can be found at the following official DOI: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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