  Electronic transport properties in armchair shaped edges graphene nanoribbons
(AGNRs) doped various impurities have been simulated by the non-equilibrium
Green's function approach combined with the first principle calculation based
on the density functional theory. We have observed that impurity levels appear
in electronic struc-tures, and that the quantization of transmission function
is moderated for doped AGNRs. The I-V characteristic can be computed from the
transmission function. Our simulation results show that AGNRs doped impurities
have higher conductance than the non-doped one.
