  Graphene is considered a promising candidate to replace conventional
transparent conductors due to its low opacity, high carrier mobility and
flexible structure. Multi-layer graphene or stacked single layer graphenes have
been investigated in the past but both have their drawbacks. The uniformity of
multi-layer graphene is still questionable, and single layer graphene stacks
require many transfer processes to achieve sufficiently low sheet resistance.
In this work, bilayer graphene film grown with low pressure chemical vapor
deposition was used as a transparent conductor for the first time. The
technique was demonstrated to be highly efficient in fabricating a conductive
and uniform transparent conductor compared to multi-layer or single layer
graphene. Four transfers of bilayer graphene yielded a transparent conducting
film with a sheet resistance of 180 {\Omega}_{\square} at a transmittance of
83%. In addition, bilayer graphene films transferred onto plastic substrate
showed remarkable robustness against bending, with sheet resistance change less
than 15% at 2.14% strain, a 20-fold improvement over commercial indium oxide
films.
