Analysis of Temperature‐Dependent Functional and Dynamic Crosstalk Noise in Adjacent Interconnects of Doped Multilayer Graphene Nanoribbon with Armchair and Zigzag Edges

Abstract

Multilayer graphene nanoribbon (MLGNR) is a potential candidate in nanoscale very large scale integration (VLSI) interconnects. A detailed analysis emphasizing the impact of GNR's edge shape in an armchair (ac) and zigzag (zz) structures on crosstalk performance considering undoped and doped (intercalated with AsF5 and FeCl3) MLGNR interconnects is presented. A capacitively‐coupled driver‐interconnect‐load (DIL) line configuration is used to analyze both the functional and dynamic crosstalk at 14 nm technology node for global interconnects. A temperature‐dependent equivalent single conductor (TD‐ESC) model is considered. It is observed that over a temperature range from 300 to 500 K, crosstalk‐induced low noise peaks in doped MLGNRs are obtained with zz‐edges as compared with undoped MLGNR, whereas, the time duration of crosstalk‐induced noise is small for doped MLGNRs with ac‐edges. Similar findings are obtained in terms of propagation delay and crosstalk‐induced delay for single and coupled interconnects, respectively, that is, the delays obtained in both kinds are small for doped MLGNR with ac‐edges. It is also observed that AsF5‐doped MLGNR outperforms FeCl3‐doped MLGNR in terms of crosstalk‐induced noise and delay. The results of MLGNR are also compared with the mixed carbon‐nanotube bundle (MCB).