Elementary building blocks of graphene-nanoribbon-based electronic devices

Abstract

Graphene nano-ribbons junctions based electronic devices are proposed in this Letter. Nonequilibrium Green's function calculations show that nano-ribbon junctions tailored from single layer graphene with different edge shape and width can act as metal/semiconductor junctions and quantum dots can be implemented. In virtue of the possibilities of patterning monolayer graphene down to atomic precision, these structures, quite different from the previously reported two-dimensional bulk graphene or carbon nanotube devices, are expected to be used as the building blocks of the future nano-electronics.

Graphene Nano-Ribbons Under Tension

“…Especially, graphene nano-ribbon (GNR), tailored from the 2D graphene lattice with finite width, has been found to possess interesting electronic structures with dependence on its width and edge shapes [6,7] . To find potential applications as reinforcement agents to strengthen and toughen in composites or as electromechanical devices, the mechanical response of the graphene nano-ribbon under tensile loading should be well understood.…”

Algebraic Current-voltage and Voltage Dependent Resistance Expressions for Ballistic Nano Conductors and Their Low Voltage Nonlinearity

“…Various nano conductors have constant valued DOS functions in the energy range of interest [7,13,14,15] hence by taking the DOS function of Eq. (1) as constant and evaluating the integral, an I-V expression without integral calculation for nano conductors is derived as shown in Eq.…”

Nano-Engineering of Graphene and Related Materials

“…4. GNR junctions based building blocks for nanoelectronics: (a) a junction connecting metallic ZGNRs and semiconducting AGNRs form a Schottky barrier at the interface; (b) a sandwich AGNR structure with varying width behaves as a quantum dot, the energy levels are tunable through varying the width of the central GNR (Xu, Zheng & Chen, 2007 ).…”

“…As mentioned above, graphene nanoribbons feature remarkable size-and edge-dependent electronic properties. Elementary building blocks for nanoelectronics, such as metal/semiconductor junctions and quantum dots, thus can be constructed through a combination of these structural patterns (Xu, Zheng & Chen, 2007). As shown in Fig.…”