Signal integrity analysis of graphene nano-ribbon (GNR) interconnects

Graphene nano-ribbons (GNR) have been proposed for building up interconnects for 3-D ICs, due to their superior performance over conventional metallic materials. In this paper, signal integrity analyses of single- and multi-layered GNR (SLGNR & MLGNR) interconnects are carried out based on their equivalent circuit models, with crosstalk effects characterized theoretically. It is shown that longer length and larger width of the SLGNR interconnect will result in higher crosstalk voltage, but it cannot exceeds its threshold one. While for MLGNRs, their advantages over Cu wires are kept even with the worst crosstalk.