Journal ArticleDOI
Modeling, Analysis, and Design of Graphene Nano-Ribbon Interconnects
TLDR
In this paper, a comprehensive conductance and delay analysis of GNR interconnects is presented using a simple tight-binding model and the linear response Landauer formula, and both global and local GNR delays are analyzed using an RLC equivalent circuit model.Abstract:
Graphene nanoribbons (GNRs) are considered as a prospective interconnect material. A comprehensive conductance and delay analysis of GNR interconnects is presented in this paper. Using a simple tight-binding model and the linear response Landauer formula, the conductance model of GNR is derived. Several GNR structures are examined, and the conductance among them and other interconnect materials [e.g., copper (Cu), tungsten (W), and carbon nanotubes (CNTs)] is compared. The impact of different model parameters (i.e., bandgap, mean free path, Fermi level, and edge specularity) on the conductance is discussed. Both global and local GNR interconnect delays are analyzed using an RLC equivalent circuit model. Intercalation doping for multilayer GNRs is proposed, and it is shown that in order to match (or better) the performance of Cu or CNT bundles at either the global or local level, multiple zigzag-edged GNR layers along with proper intercalation doping must be used and near-specular nanoribbon edge should be achieved. However, intercalation-doped multilayer zigzag GNRs can have better performance than that of W, implying possible application as local interconnects in some cases. Thus, this paper identifies the on-chip interconnect domains where GNRs can be employed and provides valuable insights into the process technology development for GNR interconnects.read more
Citations
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Journal ArticleDOI
Carbon Nanomaterials for Next-Generation Interconnects and Passives: Physics, Status, and Prospects
TL;DR: In this paper, the state-of-the-art of carbon-based nanomaterials, particularly the one-dimensional (1-D) forms, carbon nanotubes (CNTs) and graphene nanoribbons (GNRs), are reviewed.
Journal ArticleDOI
Signal Transmission Analysis of Multilayer Graphene Nano-Ribbon (MLGNR) Interconnects
TL;DR: In this paper, the effects of the Fermi level of GNR on the time delay of the transmitted rectangular pulse are examined and compared with an equivalent single-conductor (ESC) model implemented for the analysis of their transient responses.
Journal ArticleDOI
Fully Integrated Graphene and Carbon Nanotube Interconnects for Gigahertz High-Speed CMOS Electronics
Xiangyu Chen,Deji Akinwande,Kyeong-Jae Lee,G.F. Close,Shinichi Yasuda,Bipul C. Paul,Shinobu Fujita,Jing Kong,Hon-Sum Philip Wong +8 more
TL;DR: In this article, the performance of high-speed on-chip graphene and MWCNT interconnects is evaluated using a low-swing signaling technique, which has been applied to improve the speed of the interconnect up to 30%.
Journal ArticleDOI
Semiclassical spatially dispersive intraband conductivity tensor and quantum capacitance of graphene
TL;DR: In this article, analytical expressions for the intraband conductivity tensor of graphene that includes spatial dispersion for arbitrarily wave-vector values and the presence of a nonzero Fermi energy are presented.
Journal ArticleDOI
Controllable and Rapid Synthesis of High-Quality and Large-Area Bernal Stacked Bilayer Graphene Using Chemical Vapor Deposition
TL;DR: In this paper, a Bernal stacking order for bilayer and trilayer graphene is proposed and evaluated by Raman spectra, electron diffraction pattern, and dual gate field effect transistor (FET) measurements.
References
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Alexander A. Balandin,Suchismita Ghosh,Wenzhong Bao,Irene Calizo,Desalegne Teweldebrhan,Feng Miao,Chun Ning Lau +6 more
TL;DR: The extremely high value of the thermal conductivity suggests that graphene can outperform carbon nanotubes in heat conduction and establishes graphene as an excellent material for thermal management.
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Large-Area Synthesis of High-Quality and Uniform Graphene Films on Copper Foils
Xuesong Li,Weiwei Cai,Jinho An,Seyoung Kim,Junghyo Nah,Dongxing Yang,Richard D. Piner,Aruna Velamakanni,Inhwa Jung,Emanuel Tutuc,Sanjay K. Banerjee,Luigi Colombo,Rodney S. Ruoff +12 more
TL;DR: It is shown that graphene grows in a self-limiting way on copper films as large-area sheets (one square centimeter) from methane through a chemical vapor deposition process, and graphene film transfer processes to arbitrary substrates showed electron mobilities as high as 4050 square centimeters per volt per second at room temperature.
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