The Influence of Atmosphere on Electrical Transport Properties in Bilayer Graphene FET by CVD Methods

Abstract:

The desorption process for ambient atmosphere on electrical transport properties of bilayer graphene FET grown by CVD methods on SiO2/Si substrate was investigated in room temperature. With increasing the vacuum time of the device underwent, we found that the voltage of Dirac point decreased, the mobility of hole (electron) increased and the charged impurity density decreased. The results suggest that the atmospheric adsorbates (mainly oxygen and water molecules) are strongly influence the electrical transport properties of graphene FET.

• Periodical: Key Engineering Materials (Volumes 531-532)
• Pages: 383-387
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.531-532.383
• Online since: December 2012
• Authors: Gang Peng, Xiao Yan Yu, Ying Qiu Zhou, Guang Wang, Li Wang, Yan Lan He
• Keywords: Bilayer Graphene FET, Carrier Mobility, Chemical Vapor Deposition (CVD), Transfer Characteristic

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