Effects of Stone-Wales Defect Position in Graphene Nanoribbon Field-Effect Transistor

Authors H. Owlia, P. Keshavarzi, M.B. Nasrollahnejad

Electrical and Computer Engineering Department, Semnan University, 3513119111 Semnan, Iran

Е-mail hadi.owlia@gmail.com, pkeshavarzi@semnan.ac.ir, mnasrollahnejad@semnan.ac.ir
Issue Volume 9, Year 2017, Number 6
Dates Received 25 July 2017; revised manuscript received 15 November 2017; published online 24 November 2017
Citation H. Owlia, P. Keshavarzi, M.B. Nasrollahnejad, J. Nano- Electron. Phys. 9 No 6, 06008 (2017)
DOI 10.21272/jnep.9(6).06008
PACS Number(s) 85.35. – p, 85.30.Tv, 68.65.Pq, 72.80.Vp, 73.22.Pr
Keywords Device simulation (2) , Graphene nanoribbon field-effect transistor (GNRFET), Non-equilibrium Green's function (NEGF), Stone-Wales defect (3) .
Annotation In this paper, the current-voltage characteristics of a double-gated monolayer armchair graphene nanoribbon field-effect transistor (DG-AGNRFET) is investigated by introducing a Stone-Wales (SW) defect. After changing positions of the defect in width and length of the channel, it is found that the SW defect decreases off current and leads to the further reduction of the off current as the defect moves to the edge. However, this defect has not shown a notable impact on the on current. The results have confirmed the possibility of controlling the electron transport of the DG-AGNRFET by defect engineering can be useful to extend the applications of graphene nanoribbon-based devices. The device has been simulated based on the self-consistent solution of a 3D Poisson-Schrödinger equation using non-equilibrium Green's function (NEGF) formalism.

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