Document Type : Research

Authors

1 M.A., Department of Physics, Payame Noor University

2 Professor, Department of Physics, Payame Noor University

Abstract

In this paper, the electrical properties of graphene and boron nitride are studied. The effect of the layers on each other and also the twisting of the layers on each other were studied. The presence of an additional layer creates additional levels, which, in the case of graphene, maintains the conductivity of the material, but reduces its mobility dramatically. The curvature of graphene and boron nitride increases the number of energy strips to eight. Increasing the bending angle leads to the movement of the point of attachment of the conduction edges and also to the movement of the capacity of the graphene to the center of the region of the brillouin. . In the case of boron nitride, the curvature transfers the band gap to the center of the brillouin region. This transmission increases with increasing the angles of twisting.

Keywords

[1] M.S.A. Bhuyan, M.N. Uddin, M.M. Islam, F.A. Bipasha, S.S. Hossain, Synthesis of graphene, International Nano Letters, 6 (2016) 65-83.
[2] S. Stankovich, D.A. Dikin, R.D. Piner, K.A. Kohlhaas, A. Kleinhammes, Y. Jia, Y. Wu, S.T. Nguyen, R.S. Ruoff, Synthesis of graphene-based nanosheets via chemical reduction of exfoliated graphite oxide, carbon, 45 (2007) 1558-1565.
[3] H.-L. Guo, X.-F. Wang, Q.-Y. Qian, F.-B. Wang, X.-H. Xia, A green approach to the synthesis of graphene nanosheets, ACS nano, 3 (2009) 2653-2659.
[4] R. Saito, G. Dresselhaus, M.S. Dresselhaus, Physical properties of carbon nanotubes, World Scientific, 1998.
[5] A. Bahari, M. Amiri, Simulation Study of the Electron and Hole Transport in a CNTFET, Communications in Theoretical Physics, 59 (2013) 121.
[6] H. Rafii-Tabar, Computational modelling of thermo-mechanical and transport properties of carbon nanotubes, Physics Reports, 390 (2004) 235-452.
[7] W. Landgraf, S. Shallcross, K. Türschmann, D. Weckbecker, O. Pankratov, Electronic structure of twisted graphene flakes, Physical Review B, 87 (2013) 075433.
[8] X. Blase, A. Rubio, S. Louie, M. Cohen, Stability and band gap constancy of boron nitride nanotubes, EPL (Europhysics Letters), 28 (1994) 335.
[9] M. Bagheri, A. Bahari, M. Amiri, B. Dehbandi, Electronic and structural properties of Au-doped zigzag boron nitride nanotubes: A DFT study, Solid State Communications, 189 (2014) 1-4.
[10] A. Kuzmenko, I. Crassee, D. Van Der Marel, P. Blake, K. Novoselov, Determination of the gate-tunable band gap and tight-binding parameters in bilayer graphene using infrared spectroscopy, Physical Review B, 80 (2009) 165406.
[11] H. Kim, N. Leconte, B.L. Chittari, K. Watanabe, T. Taniguchi, A.H. MacDonal, J. Jung, S. Jung, Accurate Gap Determination in Monolayer and Bilayer Graphene / h-BN Moire Superlattices, Nano Lett, 2018, 18, 12, 7732-7741
[12] K. Lee, E. Liu, K. Watanabe, T. Taniguchi, J. Nah, Interface State in Bilayer Graphene Encapsulated by Hexagonal Boron Nitride, Mater Interfaces, 2018, 10, 48, 40985-40989.