AI Article Synopsis
- The study focuses on graphene nanoribbon (GNR) interconnects made from graphene created through chemical vapor deposition (CVD), exploring their electrical properties across a wide temperature spectrum.
- Room temperature mobilities of the GNRs are found to range from 100 to 500 cm²·V⁻¹·s⁻¹, indicating that the performance is largely unaffected by defects, especially in smaller devices.
- High current densities achieved (~2 × 10⁹ A/cm²) reveal the potential of CVD GNRs, but challenges with thermal heating and contact variability still need to be addressed, especially at low temperatures where GNRs behave like quantum dots.
Article Abstract
We study graphene nanoribbon (GNR) interconnects obtained from graphene grown by chemical vapor deposition (CVD). We report low- and high-field electrical measurements over a wide temperature range, from 1.7 to 900 K. Room temperature mobilities range from 100 to 500 cm(2)·V(-1)·s(-1), comparable to GNRs from exfoliated graphene, suggesting that bulk defects or grain boundaries play little role in devices smaller than the CVD graphene crystallite size. At high-field, peak current densities are limited by Joule heating, but a small amount of thermal engineering allows us to reach ∼2 × 10(9) A/cm(2), the highest reported for nanoscale CVD graphene interconnects. At temperatures below ∼5 K, short GNRs act as quantum dots with dimensions comparable to their lengths, highlighting the role of metal contacts in limiting transport. Our study illustrates opportunities for CVD-grown GNRs, while revealing variability and contacts as remaining future challenges.
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| http://dx.doi.org/10.1021/nl300584r | DOI Listing |
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