title: Transport in nanoribbon interconnects obtained from graphene grown by chemical vapor deposition.
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.
authors.affiliation: Micro and Nanotechnology Lab, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.
authors.forename: Ashkan
authors.initials: A
authors.lastname: Behnam
authors.forename: Austin S
authors.initials: AS
authors.lastname: Lyons
authors.forename: Myung-Ho
authors.initials: MH
authors.lastname: Bae
authors.forename: Edmond K
authors.initials: EK
authors.lastname: Chow
authors.forename: Sharnali
authors.initials: S
authors.lastname: Islam
authors.forename: Christopher M
authors.initials: CM
authors.lastname: Neumann
authors.forename: Eric
authors.initials: E
authors.lastname: Pop
mesh_terms: D003460:Crystallization / Q000379:methods*; D004579:Electron Transport; D005740:Gases / Q000737:chemistry; D006108:Graphite / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D013499:Surface Properties
chemical_list: D005740:Gases; D046911:Macromolecular Substances; D006108:Graphite