Electronic components embedded in a single graphene nanoribbon.

Abstract:

:The use of graphene in electronic devices requires a band gap, which can be achieved by creating nanostructures such as graphene nanoribbons. A wide variety of atomically precise graphene nanoribbons can be prepared through on-surface synthesis, bringing the concept of graphene nanoribbon electronics closer to reality. For future applications it is beneficial to integrate contacts and more functionality directly into single ribbons by using heterostructures. Here, we use the on-surface synthesis approach to fabricate a metal-semiconductor junction and a tunnel barrier in a single graphene nanoribbon consisting of 5- and 7-atom wide segments. We characterize the atomic scale geometry and electronic structure by combined atomic force microscopy, scanning tunneling microscopy, and conductance measurements complemented by density functional theory and transport calculations. These junctions are relevant for developing contacts in all-graphene nanoribbon devices and creating diodes and transistors, and act as a first step toward complete electronic devices built into a single graphene nanoribbon.Adding functional electronic components to graphene nanoribbons requires precise control over their atomic structure. Here, the authors use a bottom-up approach to build a metal-semiconductor junction and a tunnel barrier directly into a single graphene nanoribbon, an exciting development for graphene-based electronic devices.

journal_name

Nat Commun

journal_title

Nature communications

authors

Jacobse PH,Kimouche A,Gebraad T,Ervasti MM,Thijssen JM,Liljeroth P,Swart I

doi

10.1038/s41467-017-00195-2

subject

Has Abstract

pub_date

2017-07-25 00:00:00

pages

119

issue

1

issn

2041-1723

pii

10.1038/s41467-017-00195-2

journal_volume

8

pub_type

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