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Ultrafast graphene photodetector
Fengnian Xia, Thomas Mueller, Yu-ming Lin +2
The electronic properties of graphene are unique and are attracting increased attention to this novel 2-dimensional system. Its photonic properties are not less impressive. For exa…
Photocurrent imaging and efficient photon detection in a graphene transistor
Fengnian Xia, Thomas Mueller, Roksana Golizadeh-mojarad +5
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 chann…
Dual Gate Graphene FETs with fT of 50 GHz
Yu-Ming Lin, Hsin-Ying Chiu, Keith A. Jenkins +3
A dual-gate graphene field-effect transistors is presented, which shows improved RF performance by reducing the access resistance using electrostatic doping. With a carrier mobilit…
Utilization of a Buffered Dielectric to Achieve High Field-Effect Carrier Mobility in Graphene Transistors
Damon B. Farmer, Hsin-Ying Chiu, Yu-Ming Lin +3
We utilize an organic polymer buffer layer between graphene and conventional gate dielectrics in top-gated graphene transistors. Unlike other insulators, this dielectric stack does…