[14p-P4-1~78] 17 Nanocarbon Technology（Poster）

[14p-P4-55] Impact of charge transfer and coulomb scattering on current conduction caused by CO₂ molecules physisorbed onto graphene

〇Daiki Kato¹, Manoharan Muruganathan¹, Hiroshi Mizuta¹ (1.JAIST)

Keywords:Graphene gas sensor, CO2 gas sensing, Coulomb scattering

Graphene devices were fabricated and characterized in the CO₂ gas environment. As applying the back gate voltage under the CO₂ gas environment, the drain current was measured. The observation of the dirac point shift in the gate characteristics could be attributed to the Coulomb scattering caused by CO₂ gas molecule adsorption onto the graphene surface. Further discussion and low frequency noise characteristics will be presented.