Publikationsrepositorium - Helmholtz-Zentrum Dresden-Rossendorf
1 PublikationEffect of compression on the electronic, optical and transport properties of MoS2/graphene-based junctions
Ghorbani-Asl, M.; Bristowe, P. D.; Koziol, K.; Heine, T.; Kuc, A.
Abstract
Electronic, optical and transport properties of the MoS2/graphene heterostructure have been investigated as function of applied uniaxial compression normal to the interface plane using first principles calculations and a non-equilibrium Green’s function approach. The results show that a small compressive load (∼1 GPa) can open up the band gap (∼12 meV), reduce the optical absorption coefficient (∼7%), redshift the absorption spectrum, and create non-Ohmic I–V characteristics that depend on the magnitude of applied bias. This suggests that graphene/MoS2 heterostructure can be suitable for electromechanical and photomechanical devices where the electronic, optical and transport properties can be tuned by an appropriate application of bias and mechanical deformations.
Keywords: MoS2/graphene heterojunction; interlayer compression; transport properties; NEGF; DFT
-
2D Materials 3(2016), 025018
DOI: 10.1088/2053-1583/3/2/025018
Cited 47 times in Scopus
Downloads
Permalink: https://www.hzdr.de/publications/Publ-23934