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RF analysis of intercalated graphene nanoribbon-based global-level interconnects

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Abstract

Intercalation doping is emerging as a prospective solution to enhance the performance of graphene nanoribbon interconnects. In this paper, the radio frequency (RF) analysis of stage-2 arsenic pentafluoride- and lithium-doped multilayer graphene nanoribbons (MLGNRs) has been carried out for global-level interconnects in terms of skin depth, surface impedance, critical ratio (CR), transfer gain, and 3-dB bandwidth. The skin-depth results demonstrate that doped MLGNRs exhibit minimum performance degradation primarily due to their higher conductivity, mean free path, and momentum relaxation time as compared to neutral MLGNR. An equivalent second-order accurate RLC model of an intercalation-doped MLGNR has been used to extract the transfer gain and 3-dB bandwidth results at 14-nm technology node for global-level interconnects. The results are further evaluated by implementing an advanced π-type equivalent single conductor derived from multi-conductor transmission line model. The doped MLGNR interconnects demonstrate 11-fold enhancement of 3-dB bandwidth as compared to copper (Cu). Also, the delay and energy-delay-product (EDP) computations in time domain for doped MLGNR interconnects exhibit nearly 10 times lesser delay and significant reduction in EDP than Cu counterparts. It is also observed that optimum values for 3-dB bandwidth and EDP parameters for intercalated MLGNRs could be achieved through width optimization. The RF and transient results validate intercalated MLGNRs as a potential candidate to replace Cu for next-generation global-level interconnects.

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Authors and Affiliations

  1. Department of Electronics and Communication Engineering, Punjab Engineering College (Deemed To Be University), Chandigarh, India

    Manjit Kaur, Neena Gupta & Arun K. Singh

  2. Department of Applied Sciences, Punjab Engineering College (Deemed To Be University), Chandigarh, India

    Sanjeev Kumar

  3. Department of Electronics and Communication Engineering, National Institute of Technical Teachers Training & Research, Sector 26, Chandigarh, India

    Balwinder Raj

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  1. Manjit Kaur
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Kaur, M., Gupta, N., Kumar, S. et al. RF analysis of intercalated graphene nanoribbon-based global-level interconnects. J Comput Electron 19, 1002–1013 (2020). https://doi.org/10.1007/s10825-020-01530-5

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