Fig. 4: Configuration and electrical characterization of the BP–MoS2 heterojunction diode.
From: Black phosphorus-based van der Waals heterostructures for mid-infrared light-emission applications
a, b Schematic (a) and optical (b) images of the BP–MoS2 heterojunction diode. The scale bar is 10 μm. MoS2 and BP flakes are enclosed by blue and orange dashed lines, respectively. c Transfer curves of thin-film MoS2 (blue line) and BP (orange line) at source–drain voltage Vds = 0.5 V at room temperature. d Source–drain current Ids as a function of Vds at various gate voltages Vg for the BP–MoS2 heterojunction diode at room temperature
