Figure 5: Average J(V) curves’ comparison of devices prepared by different methods.

(a,b) J(V) curves of G/G and G/PBASE/G devices via wet transfer of CVD graphene. (c,d) J(V) curves of G/G and G/PBASE/G devices via dry transfer of micromechanically cleaved graphene monolayer. The error bars refer to the log-s.d. of the log-average J values.