Figure 4
From: Pulsed Near-IR Photoresponse in a Bi-metal Contacted Graphene Photodetector
Decoupled photoresponse.
(a) Linear component of the photovoltage as a function of the incident laser power (black dots) with a linear fit (red line). (b) Extrapolated α at different gate voltages. (c) Extrapolated nonlinear component of the photovoltage as a function of the gate voltage due to a pulsed near-IR laser excitation with different incident powers. (d) Photoresponse measured using the pulse-coincidence technique as a function of the delay time at different gate voltages; legends indicate the gate voltage in volts. T ~ 120 K for (a–c) and T ~ 50 K for (d).
