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|Title:||Chemical control over the energy-level alignment in a two-terminal junction||Authors:||Yuan L.
self assembled monolayer
X ray absorption spectroscopy
|Issue Date:||2016||Publisher:||Nature Publishing Group||Citation:||Yuan L., Franco C., Crivillers N., Mas-Torrent M., Cao L., Sangeeth C.S.S., Rovira C., Veciana J., Nijhuis C.A. (2016). Chemical control over the energy-level alignment in a two-terminal junction. Nature Communications 7 : 12066. ScholarBank@NUS Repository. https://doi.org/10.1038/ncomms12066||Abstract:||The energy-level alignment of molecular transistors can be controlled by external gating to move molecular orbitals with respect to the Fermi levels of the source and drain electrodes. Two-terminal molecular tunnelling junctions, however, lack a gate electrode and suffer from Fermi-level pinning, making it difficult to control the energy-level alignment of the system. Here we report an enhancement of 2 orders of magnitude of the tunnelling current in a two-terminal junction via chemical molecular orbital control, changing chemically the molecular component between a stable radical and its non-radical form without altering the supramolecular structure of the junction. Our findings demonstrate that the energy-level alignment in self-assembled monolayer-based junctions can be regulated by purely chemical modifications, which seems an attractive alternative to control the electrical properties of two-terminal junctions.||Source Title:||Nature Communications||URI:||https://scholarbank.nus.edu.sg/handle/10635/174945||ISSN:||20411723||DOI:||10.1038/ncomms12066|
|Appears in Collections:||Elements|
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