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. 2017 Nov 22;8:1672. doi: 10.1038/s41467-017-01978-3

Fig. 3.

Fig. 3

Tunable photoresponse in the dual-gate 10-layer mid-IR BP photodetector. ac Photocurrents as function of top gate biases at different static back gate biases for 3.4 (a), 5 (b), and 7.7 μm (c) incident lasers. The incident laser powers are 40, 50, and 100 μW for 3.4, 5, and 7.7 μm wavelengths, respectively. The source-drain voltage is 300 mV. d Peak photocurrents at different displacements fields for 5 and 7.7 μm incident lasers