Fig. 3: Investigation on the rectification of the MoTe2/SnS2 heterojunction device.

a Output characteristic of the MoTe2/SnS2 heterojunction device. The inset shows the logarithmic scale of the output curve. b Rectification ratio, defined by Ib/If at the same Vds, with the increasing magnitude of Vds. c Fowler–Nordheim plot. d Energy band diagrams of the heterojunction at different Vds.