Oxygen sensors made by monolayer graphene under room temperature

  title={Oxygen sensors made by monolayer graphene under room temperature},
  author={Chun-Wei Chen and Sheng-Chun Hung and M. D. Yang and C. W. Yeh and C. H. Wu and Gou-chung Chi and Fan Ren and Stephen J. Pearton},
  journal={Applied Physics Letters},
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… 

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