First-principles analysis of intercalated doped zigzag MLGNR: prospects for nano-interconnect application

Intercalated doped zigzag multilayered graphene nanoribbon (zzMLGNR) plays a vital role in enhancing electrical properties by altering the structure at lower dimensions. This investigation provides a path to further extend the research toward the utilization of zzMLGNR as an alternative for nano-interconnect applications. Therefore, this work considers the metallic nature of zzMLGNR along with double-edge passivation using hydrogen (H) and ruthenium (Ru). The investigation is carried out for X-zzMLGNR-X (X = H or Ru atoms) in terms of the transmission spectrum when considering pristine and different intercalated doping materials including AsF 5 , Li, FeCl 3 , and MoCl 5 between the graphene layers. The number of conducting channels and Fermi velocity are accurately extracted using different configurations of the intercalated doped X-zzMLGNR-X structures. These extracted parameters are used to investigate the performance of X-zzMLGNR-X for interconnect lengths ranging from 2 to 12 μm. Using the optimized configuration, an equivalent pi-type RLC network is modeled for the first time for pristine and intercalated doped X-zzMLGNR-X interconnects. It is evident that the Li-intercalated Ru-zzMLGNR-Ru is outperformed by 47.03%, 54.75%, 75.63%, and 83.99% in terms of delay relative to FeCl 3 -, AsF 5 -, MoCl 5 -, and pristine-based on-chip interconnects, respectively.