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Tunable rectification in a molecular heterojunction with two-dimensional semiconductors

Cited 17 time in Web of Science Cited 18 time in Scopus
Authors

Shin, Jaeho; Yang, Seunghoon; Jang, Yeonsik; Eo, Jung Sun; Kim, Tae-Wook; Lee, Takhee; Lee, Chul-Ho; Wang, Gunuk

Issue Date
2020-03
Publisher
Nature Publishing Group
Citation
Nature Communications, Vol.11 No.1, p. 1412
Abstract
Until now, a specifically designed functional molecular species has been recognized as an absolute necessity for realizing the diode's behavior in molecular electronic junctions. Here, we suggest a facile approach for the implementation of a tailored diode in a molecular junction based on non-functionalized alkyl and conjugated molecular monolayers. A two-dimensional semiconductor (MoS2 and WSe2) is used as a rectifying designer at the alkyl or conjugated molecule/Au interface. From the adjustment of band alignment at molecules/two-dimensional semiconductor interface that can activate different transport pathways depending on the voltage polarity, the rectifying characteristics can be implemented and controlled. The rectification ratio could be widely tuned from 1.24 to 1.83 x 10(4) by changing the molecular species and type and the number of layers of the two-dimensional semiconductors in the heterostructure molecular junction. Our work sets a design rule for implementing tailored-diode function in a molecular heterojunction structure with non-functionalized molecular systems.
ISSN
2041-1723
URI
https://hdl.handle.net/10371/202247
DOI
https://doi.org/10.1038/s41467-020-15144-9
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  • College of Engineering
  • Department of Electrical and Computer Engineering
Research Area 2차원 반도체 소자 및 재료, High-Performance 2D Electronics, Low-Power 2D Electronics, 뉴로모픽 소자 및 응용기술, 저전력 소자 및 소자물리

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