Sub-5 nm, globally aligned graphene nanoribbons on Ge(001)

Kiraly, Brian; Mannix, Andrew J.; Jacobberger, Robert M.; Fisher, Brandon L.; Arnold, Michael S.; Hersam, Mark C.; Guisinger, Nathan P.

doi:10.1063/1.4950959

Title: Sub-5 nm, globally aligned graphene nanoribbons on Ge(001)

Journal Article · Mon May 23 00:00:00 EDT 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4950959· OSTI ID:1275785

Kiraly, Brian ^[1]; Mannix, Andrew J. ^[1]; Jacobberger, Robert M. ^[2]; Fisher, Brandon L. ^[3]; Arnold, Michael S. ^[2]; Hersam, Mark C. ^[4]; Guisinger, Nathan P. ^[3]

Argonne National Lab. (ANL), Argonne, IL (United States); Northwestern Univ., Evanston, IL (United States)
Univ. of Wisconsin, Madison, WI (United States)
Argonne National Lab. (ANL), Argonne, IL (United States)
Northwestern Univ., Evanston, IL (United States)

Graphene nanoribbons (GNRs) hold great promise for future electronics because of their edge and width dependent electronic bandgaps and exceptional transport properties. While significant progress toward such devices has been made, the field has been limited by difficulties achieving narrow widths, global alignment, and atomically pristine GNR edges on technologically relevant substrates. A recent advance has challenged these limits by using Ge(001) substrates to direct the bottom-up growth of GNRs with nearly pristine armchair edges and widths near ~10 nm via atmospheric pressure chemical vapor deposition. In this work, we extend the growth of GNRs on Ge(001) to ultra-high vacuum conditions and realize GNRs narrower than 5 nm. Armchair graphene nanoribbons directed along the Ge <110> surface directions are achieved with excellent width control and relatively large bandgaps. As a result, the bandgap magnitude and electronic uniformity make these new materials excellent candidates for future developments in nanoelectronics.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); US Department of the Navy, Office of Naval Research (ONR); National Science Foundation (NSF)

Grant/Contract Number:: AC02-06CH11357; FG02-09ER16109; SC0006414

OSTI ID:: 1275785

Alternate ID(s):: OSTI ID: 1254194

Journal Information:: Applied Physics Letters, Vol. 108, Issue 21; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 28 works

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Direct Growth of Unidirectional Graphene Nanoribbons on Vicinal Ge(001) Li, Panlin; Wang, Tianbo; Yang, Yuekun physica status solidi (RRL) – Rapid Research Letters, Vol. 14, Issue 2 https://doi.org/10.1002/pssr.201900398	journal	September 2019
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