Atomically defined angstrom-scale all-carbon junctions.

Abstract:

:Full-carbon electronics at the scale of several angstroms is an expeimental challenge, which could be overcome by exploiting the versatility of carbon allotropes. Here, we investigate charge transport through graphene/single-fullerene/graphene hybrid junctions using a single-molecule manipulation technique. Such sub-nanoscale electronic junctions can be tuned by band gap engineering as exemplified by various pristine fullerenes such as C60, C70, C76 and C90. In addition, we demonstrate further control of charge transport by breaking the conjugation of their π systems which lowers their conductance, and via heteroatom doping of fullerene, which introduces transport resonances and increase their conductance. Supported by our combined density functional theory (DFT) calculations, a promising future of tunable full-carbon electronics based on numerous sub-nanoscale fullerenes in the large family of carbon allotropes is anticipated.

journal_name

Nat Commun

journal_title

Nature communications

authors

Tan Z,Zhang D,Tian HR,Wu Q,Hou S,Pi J,Sadeghi H,Tang Z,Yang Y,Liu J,Tan YZ,Chen ZB,Shi J,Xiao Z,Lambert C,Xie SY,Hong W

doi

10.1038/s41467-019-09793-8

subject

Has Abstract

pub_date

2019-04-15 00:00:00

pages

1748

issue

1

issn

2041-1723

pii

10.1038/s41467-019-09793-8

journal_volume

10

pub_type

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