Spatially resolved electronic structures of atomically precise armchair graphene nanoribbons

Han Huang; Dacheng Wei; Jiatao Sun; Swee Liang Wong; Yuan Ping Feng; A. H.Castro Neto; Andrew Thye Shen Wee

doi:10.1038/srep00983

Spatially resolved electronic structures of atomically precise armchair graphene nanoribbons

Han Huang, Dacheng Wei, Jiatao Sun, Swee Liang Wong, Yuan Ping Feng, A. H.Castro Neto, Andrew Thye Shen Wee^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

246 Citations (Scopus)

Abstract

Graphene has attracted much interest in both academia and industry. The challenge of making it semiconducting is crucial for applications in electronic devices. A promising approach is to reduce its physical size down to the nanometer scale. Here, we present the surface-assisted bottom-up fabrication of atomically precise armchair graphene nanoribbons (AGNRs) with predefined widths, namely 7-, 14- and 21-AGNRs, on Ag(111) as well as their spatially resolved width-dependent electronic structures. STM/STS measurements reveal their associated electron scattering patterns and the energy gaps over 1 eV. The mechanism to form such AGNRs is addressed based on the observed intermediate products. Our results provide new insights into the local properties of AGNRs, and have implications for the understanding of their electrical properties and potential applications.

Original language	English
Article number	983
Journal	Scientific Reports
Volume	2
DOIs	https://doi.org/10.1038/srep00983
Publication status	Published - 2012
Externally published	Yes

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abstract = "Graphene has attracted much interest in both academia and industry. The challenge of making it semiconducting is crucial for applications in electronic devices. A promising approach is to reduce its physical size down to the nanometer scale. Here, we present the surface-assisted bottom-up fabrication of atomically precise armchair graphene nanoribbons (AGNRs) with predefined widths, namely 7-, 14- and 21-AGNRs, on Ag(111) as well as their spatially resolved width-dependent electronic structures. STM/STS measurements reveal their associated electron scattering patterns and the energy gaps over 1 eV. The mechanism to form such AGNRs is addressed based on the observed intermediate products. Our results provide new insights into the local properties of AGNRs, and have implications for the understanding of their electrical properties and potential applications.",

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AU - Huang, Han

AU - Wei, Dacheng

AU - Sun, Jiatao

AU - Wong, Swee Liang

AU - Feng, Yuan Ping

AU - Neto, A. H.Castro

AU - Wee, Andrew Thye Shen

PY - 2012

Y1 - 2012

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AB - Graphene has attracted much interest in both academia and industry. The challenge of making it semiconducting is crucial for applications in electronic devices. A promising approach is to reduce its physical size down to the nanometer scale. Here, we present the surface-assisted bottom-up fabrication of atomically precise armchair graphene nanoribbons (AGNRs) with predefined widths, namely 7-, 14- and 21-AGNRs, on Ag(111) as well as their spatially resolved width-dependent electronic structures. STM/STS measurements reveal their associated electron scattering patterns and the energy gaps over 1 eV. The mechanism to form such AGNRs is addressed based on the observed intermediate products. Our results provide new insights into the local properties of AGNRs, and have implications for the understanding of their electrical properties and potential applications.

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Spatially resolved electronic structures of atomically precise armchair graphene nanoribbons

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