Jump to main content
Jump to site search

Issue 24, 2016
Previous Article Next Article

Electronic structure and optical properties of graphene/stanene heterobilayer

Author affiliations

Abstract

The structural, electronic and optical properties of the graphene hybrid with stanene, the tin counterpart of graphene, are investigated by means of density functional calculation with the observation of band gap opening and enhanced visible light response. The lattice mismatch between graphene and stanene is taken into consideration and several stacking methods for model construction are proposed to study the possible effects. The Dirac feature can be observed in this bilayer system with relatively stronger interlayer interaction than weak van der Waals forces, which is ascribed to the unsaturated p orbital of stanene. Despite the mutual semi-metal nature of graphene and stanene, it is significant to note a band gap opening and the electrical neutrality of the bilayer. The combination of high carrier mobility of graphene and the excellent spin Hall effect of stanene is expected to coexist in the bilayer structure. In addition, we found that the stanene monolayer has a relatively lower work function than graphene and more importantly, it exhibits more pronounced optical absorption than graphene. The results indicate that a graphene/stanene heterobilayer will facilitate the performance of stanene related spintronic devices and is therefore a good candidate for photoelectronic devices.

Graphical abstract: Electronic structure and optical properties of graphene/stanene heterobilayer

Back to tab navigation
Please wait while Download options loads

Publication details

The article was received on 12 Apr 2016, accepted on 20 May 2016 and first published on 20 May 2016


Article type: Paper
DOI: 10.1039/C6CP02424F
Citation: Phys. Chem. Chem. Phys., 2016,18, 16302-16309
  •   Request permissions

    Electronic structure and optical properties of graphene/stanene heterobilayer

    X. Chen, R. Meng, J. Jiang, Q. Liang, Q. Yang, C. Tan, X. Sun, S. Zhang and T. Ren, Phys. Chem. Chem. Phys., 2016, 18, 16302
    DOI: 10.1039/C6CP02424F

Search articles by author