Multifunctional heterostructures constructed using MoS2 and WS2 nanoribbons

Abstract

Using first-principles calculations based on nonequilibrium Green's function together with density functional theory, we investigated the electronic transport properties of some devices consisting of armchair and zigzag MoS₂NRs/WS₂NRs in-plane heterostructures. The results indicate that these heterostructures exhibit rectifying performance, which are depressed as the number of WS₂NR unit cell decreases. In addition, the NDR effect is observed and can be modulated. Importantly, the zigzag MoS₂NRs/WS₂NRs heterostructures can be used as spintronic devices because of their tunable spin filtering behavior and NDR effect. The devices with WS₂NRs electrode display a better NDR effect and spin filtering behavior. The unique properties of these heterostructures suggest promising applications in the next generation nanoelectronic devices.