Monolayer Twisted Graphene-Based Schottky Transistor

Abstract

The outstanding properties of graphene-based components, such as twisted graphene, motivates nanoelectronic researchers to focus on their applications in device technology. Twisted graphene as a new class of graphene structures is investigated in the platform of transistor application in this research study. Therefore, its geometry effect on Schottky transistor operation is analyzed and the relationship between the diameter of twist and number of twists are explored. A metal–semiconductor–metal twisted graphene-based junction as a Schottky transistor is considered. By employing the dispersion relation and quantum tunneling the variation of transistor performance under channel length, the diameter of twisted graphene, and the number of twists deviation are studied. The results show that twisted graphene with a smaller diameter affects the efficiency of twisted graphene-based Schottky transistors. Additionally, as another main characteristic, the ID-VGS is explored, which indicates that the threshold voltage is increased by diameter and number of twists in this type of transistor.

Contact Effect On Twisted Graphene Based Schottky Transistor

“…In zigzag TWG (ZTWG), m is equal to zero and when n-1 is multiple of 3, the achieved zigzag structure has metallic behavior, otherwise, the zigzag structure acts as a semiconductor. 26 Based on this theory (10, 0), (19, 0) and (28, 0) are metallic TWG and (9, 0), (18, 0) and (26, 0) are semiconducting TWG. The focus of the work presented herein is the investigation of GNR and TWG as metalsemiconductor-metal (MSM) junctions in the form of Schottky transistor.…”

Thermoelectric Effect on Linear Array of Graphene-Based Materials Including Fullerene, Twisted Graphene, and Graphene Nanoribbon

“…Thermal stability, 20 high carrier mobility, 21 and great Seebeck coefficient made GBM an ideal nominee for energy harvesting applications, especially, in thermoelectric devices. The term "thermoelectric effect" is used to define the direct conversion of an electrical voltage to a temperature gradient and vice versa.…”