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Browse Journals & Magazines > Applied Physics Letters ...> Volume:99 Issue:24 Help

Oxygen sensors made by monolayer graphene under room temperature

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8 Author(s)
Chen, C.W. ; Department of physics, National Central University, Jhong-Li 320, Taiwan ; Hung, S.C. ; Yang, M.D. ; Yeh, C.W.
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Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.3668105 

The electrical resistivity of monolayer graphene exhibit significant changes upon expose to different concentration of oxygen (O2) at room temperature. The monolayer graphene, grown by chemical vapor deposition with perfect uniformity within 1 cm × 1 cm will attach O2 molecules and enhance the hole conductivity, which will lead to a change of resistivity of graphene thin film. We quantified the change of resistivity of graphene versus different O2 concentration and the detection limit of the simple O2 sensor was 1.25% in volume ratio.

Published in:
Applied Physics Letters  (Volume:99 ,  Issue: 24 )

Date of Publication: Dec 2011

Page(s):
243502 - 243502-3
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.3668105
Date of Current Version :
15 December 2011
Issue Date :
Dec 2011

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