The electrochemical potential or Fermi energy of Graphene can be tuned from 0eV to 2eV as per the following article:
Llatser, I. [et al.]. Radiation characteristics of tunable graphennas in the terahertz band. "Radioengineering", Desembre 2012, vol. 21, núm. 4, p. 1-8.
http://hdl.handle.net/2117/331226
The effect of electrochemical potential on Graphene conductivity can be found from the following article:
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