Performance Analysis of Top-Contact MLGNR Based Interconnects

In this paper transient behavior of both types of multi-layer graphene nanoribbon (MLGNR) interconnects i.e., side and top-contact MLGNRs are studied. The propagation delay of Driver Interconnect Load (DIL) model for different interconnect lengths is analyzed by taking different process induced parameters variations into consideration. The average deviations in propagation delay of DIL model are analyzed using Monte Carlo approach and it is observed that even for top-contact MLGNRs (TC-MLGNRs) the deviations are below 4% except for mean free path. The cross-talk analysis for TC-MLGNRs is also presented in this paper. Optimum TC-MLGNR is designed by decreasing interlayer resistance to meet the performance of side-contact MLGNRs (SC-MLGNR) and comparable with copper interconnects. For cross-talk analysis Transmission Line Modeling (TLM) is used and compared with simulation results, which shows an excellent accuracy. Finally optimized TC-MLGNR interconnects performance is comparable with the SC-MLGNR interconnects.