Performance and signal integrity analysis of intercalation‐doped MLVGNR interconnects

Abstract

In this work, signal integrity, power consumption and stability of multilayer vertical graphene nanoribbon (MLVGNR) interconnects are determined and compared with multilayer horizontal GNR (MLHGNR) and conventional copper interconnects for different intercalation dopants and specularity indices. Lithium-intercalated MLVGNR outperforms these conventional interconnects in terms of delay. However, it is not very much immune to noise and also consumes more power but overall noise delay product and power delay product are least among all. As far as stability is concerned, MLVGNR interconnects have a comparable gain and phase margin and a steep transient response without an undershoot as compared with other interconnect configurations, which experience undershoot. It is worth to point out that MLVGNR interconnects are more amenable to scaling compared with other alternatives. This study for the first time analyses and compares the performance, signal integrity and stability of MLVGNR, MLHGNR and copper interconnects.