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Transition from Tunneling Leakage Current to Molecular Tunneling in Single-Molecule Junctions

Liu, Junyang; Zhao, Xiaotao; Zheng, Jueting; Huang, Xiaoyan; Tang, Yongxiang; Wang, Fei; Li, Ruihao; Pi, Jiuchan; Huang, Cancan; Wang, Lin; Yang, Yang; Shi, Jia; Mao, Bing-Wei; Tian, Zhong-Qun; Bryce, Martin R.; Hong, Wenjing

Transition from Tunneling Leakage Current to Molecular Tunneling in Single-Molecule Junctions Thumbnail


Authors

Junyang Liu

Xiaotao Zhao

Jueting Zheng

Xiaoyan Huang

Yongxiang Tang

Fei Wang

Ruihao Li

Jiuchan Pi

Cancan Huang

Lin Wang

Yang Yang

Jia Shi

Bing-Wei Mao

Zhong-Qun Tian

Wenjing Hong



Abstract

The tunneling leakage current will be a major quantum obstacle during miniaturization in the semiconductor industry down to the scale of several nanometers. At this scale, to promote charge transport and overcome the tunneling leakage current between the source and drain terminals, molecular electronic junctions offer opportunities by inserting molecules between these two electrodes. Employing a series of oligo(aryleneethynylene) (OAE) molecules, here we investigate the transition from tunneling leakage current to molecular tunneling in the single-molecule devices using a mechanically controllable break-junction technique, and the transition distances of the OAE molecular junctions were determined and even down to 0.66 nm for OAE2 molecular junction, which demonstrates that the intrinsic charge-transport properties of a single-molecule device can be outstripped from the tunneling leakage current. Consequently, molecular electronic devices show the potential to push the ultimate limit of miniaturization to the scale of several angstroms.

Citation

Liu, J., Zhao, X., Zheng, J., Huang, X., Tang, Y., Wang, F., …Hong, W. (2019). Transition from Tunneling Leakage Current to Molecular Tunneling in Single-Molecule Junctions. Chem, 5(2), 390-401. https://doi.org/10.1016/j.chempr.2018.11.002

Journal Article Type Article
Acceptance Date Nov 2, 2018
Online Publication Date Dec 13, 2018
Publication Date Feb 14, 2019
Deposit Date Feb 21, 2019
Publicly Available Date Dec 13, 2019
Journal Chem
Print ISSN 2451-9308
Publisher Cell Press
Peer Reviewed Peer Reviewed
Volume 5
Issue 2
Pages 390-401
DOI https://doi.org/10.1016/j.chempr.2018.11.002

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