LSPR mode-enhanced photodetectors for two-dimensional materials (IMAGE)

Advanced Devices & Instrumentation

LSPR mode-enhanced photodetectors for two-dimensional materials

Caption

(A) Illustration of a hybrid Au–graphene photodetector. (B) Responsivity enhancement of the graphene photodetector with Au nanoparticles. (C) Schematic of a graphene photodetector integrated with Au nanoelectrodes. (D) The current density distribution in the graphene photodetector integrated with Au nanoelectrodes. The bottom is the equivalent circuit model of the device. (E) The photovoltage map of a graphene photodetector integrated with Au nanoelectrodes. (F) The photovoltage map of a graphene photodetector without Au nanoelectrodes. (G) Schematic of a bilayer MoS2 photodetector integrated with asymmetric Au wires. (H) Experimental and simulated responsivity under different bias voltage. The right band diagram illustrates the motion of hot electrons under different bias voltages. (I) Schematic of a monolayer MoS2 photodetector incorporating a nanoparticle grating structure. (J) Photocurrent of a bare MoS2 photodetector and hybrid MoS2 photodetector integrated with different plasmonic nanostructures. (K) The schematic of a gate-tunable plasmonic MoS2 phototransistors (photoFETs) integrated with Ag nanodisk arrays. (L) Photoresponsivity spectra of a pristine MoS2 photoFET and plasmonic photoFET.

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Advanced Devices & Instrumentation

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