Hot-carrier photocurrent effects at graphene–metal interfaces

摘要: Photoexcitation of graphene leads to an interesting sequence phenomena, some which can be exploited in optoelectronic devices based on graphene. In particular, the efficient and ultrafast generation electron distribution with elevated temperature concomitant a photo-thermoelectric voltage at symmetry-breaking interfaces is interest for photosensing light harvesting. Here, we experimentally study generated photocurrent graphene–metal interface, focusing time-resolved photocurrent, effects photon energy, Fermi energy polarization. We show that single framework explains all experimental results.