Broadband photodetector based on carbon nanotube thin film/single layer graphene Schottky junction.

In this study, we present a broadband nano-photodetector based on single-layer graphene (SLG)-carbon nanotube thin film (CNTF) Schottky junction. It was found that the as-fabricated device exhibited obvious sensitivity to a wide range of illumination, with peak sensitivity at 600 and 920 nm. In addition, the SLG-CNTF device had a fast response speed (τ = 68 μs, τ = 78 μs) and good reproducibility in a wide range of switching frequencies (50-5400 Hz).