Spectral Responsivity and Photoconductive Gain in Thin Film Black Phosphorus Photodetectors
Spectral Responsivity and Photoconductive Gain in Thin Film Black Phosphorus Photodetectors
We have fabricated black phosphorus photodetectors and characterized their full spectral responsivity. These devices, which are effectively in the bulk thin film limit, show broadband responsivity ranging from <400 nm to the ∼3.8 μm bandgap. In the visible, an intrinsic responsivity >6 A/W can be obtained due to internal gain …