Capacitance of Graphene/Copper Hybrid Nano Ribbon Interconnect - A First Principle Study. (7th July 2017)

• Record Type: Journal Article
• Authors: Mohsin, K M; Srivastava, Ashok; Sharma, Ashwani K; Mayberry, Clay
• Is Part Of: ECS transactions. Volume 77:Number 11(2017)
• Page Start: 645
• Page End: 650
• Publication Date: 2017-07-07
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/07711.0645ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : Graphene nanoribbon on copper (G/Cu) based interconnect has shown superior electro-thermal transport as a potential candidate for the next generation interconnects. Using density function theory (DFT) we have studied the capacitance of graphene/copper (G/Cu) hybrid-nano wire interconnect system and compared with graphene-based interconnect. From the first principle calculation, band structure and density of states have been calculated. Quantum capacitance is calculated from the density of states of G/Cu hybrid material. For this presented G/Cu system, we found significant enhancement in quantum capacitance which indicates a dominance of electrostatic capacitance over quantum capacitance in overall interconnect capacitances. Near Dirac point, a 5nm wide G/Cu nanoribbon shows a capacitance of 25.29 µF/cm 2 while its 2D counterpart shows only 4.75 µF/cm 2 . For comparison, a 2D graphene sheet shows only 0.06 µF/cm 2 .