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Atomically defined angstrom-scale all-carbon junctions
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DOI：10.1038/s41467-019-09793-8.png)
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Abstract
En 中文
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 C-60, C-70, C-76 and C-90. In addition, we demonstrate further control of charge transport by breaking the conjugation of their t 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.
Keywords:
SINGLE-MOLECULE JUNCTIONS
CHARGE-TRANSPORT
CONDUCTANCE
C-60
SPECTROSCOPY
FULLERENES
RESISTANCE
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