Material characteristics and equivalent circuit models of stacked graphene oxide for capacitive humidity sensors

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The oxidation properties of graphene oxide (GO) are systematically correlated with their chemical sensing properties. Based on an impedance analysis, the equivalent circuit models of the capacitive sensors are established, and it is demonstrated that capacitive operations are related to the degree of oxidation. This is also confirmed by X-ray diffraction and Raman analysis. Finally, highly sensitive stacked GO sensors are shown to detect humidity in capacitive mode, which can be useful in various applications requiring low power consumption. (C) 2016 Author(s)
Publisher
AMER INST PHYSICS
Issue Date
2016-03
Language
English
Article Type
Article
Keywords

GRAPHITE OXIDE; FILMS; SENSITIVITY; DISPERSIONS; NANOSHEETS; LAYER

Citation

AIP ADVANCES, v.6, no.3

ISSN
2158-3226
DOI
10.1063/1.4943509
URI
http://hdl.handle.net/10203/209043
Appears in Collection
EE-Journal Papers(저널논문)
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