Quantum current modelling on tri-layer graphene nanoribbons in limit degenerate and non-degenerate

International Journal of Bio-Inorganic Hybrid Nanomaterials

دوره 9، شماره 1، فروردین 2020، صفحه 45-51   

نوع مقاله: Research Paper

چکیده

Graphene is determined by a wonderful carrier transport property and high sensitivity
at the surface of a single molecule, making them great as resources used in Nano electronic use.
TGN is modeled in form of three honeycomb lattices with pairs of in-equivalent sites as {A1, B1},
{A2, B2}, and {A3, B3} which are located in the top, center and bottom layers, respectively. Trilayer
graphene has two types of stable configurations, ABA and ABC stacking orders. In both types, the first
two layers are Bernal-stacked, where one sub lattice of the middle layer is located above the center of
the hexagons of the bottom layer. The TGN is shown to have different electronic properties which are
strongly dependent on the interlayer stacking sequence. ABA-stacked TGN with width and thickness
less than De-Broglie wave length can be assumed as a one dimensional material. The present research
models transmission coefficient of the Schotcky structure in the graphene-based transistor based on
semiconducting channel width and then analysis its quantum properties given dependence on structural
parameter. At the same time, the quantum current is presented based on the transmission coefficient for
the trilayer graphene. Then, we obtain the quantum current of the proposed structure in the degenerate
and non-degenerate states and compare it with experimental data.

کلیدواژه‌ها

Current-Voltage characteristic؛ Degenerate and nondegenerate regime؛ Quantum current؛ Transmission coefficient؛ Trilayer graphene؛ Transistor