photocurrent imaging and efficient photon detection in a graphene transistor

FREE-DOWNLOAD F Xia, T Mueller, R Golizadeh-Mojarad… – Nano letters, 2009
We measure the channel potential of a graphene transistor using a scanning photocurrent imaging
technique. We show that at a certain gate bias, the impact of the metal on the channel potential
profile extends into the channel for more than one-third of the total channel length from