Maskless Arbitrary Writing of Molecular Tunnel Junctions

Seo Eun Byeon, Miso Kim, Hyo Jae Yoon

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Since fabricating geometrically well-defined, noninvasive, and compliant electrical contacts over molecular monolayers is difficult, creating molecular-scale electronic devices that function in high yield with good reproducibility is challenging. Moreover, none of the previously reported methods to form organic-electrode contacts at the nanometer and micrometer scales have resulted in directly addressable contacts in an untethered form under ambient conditions without the use of cumbersome equipment and nanolithography. Here we show that in situ encapsulation of a liquid metal (eutectic Ga-In alloy) microelectrode, which is used for junction formation, with a convenient photocurable polymeric scaffold enables untethering of the electrode and direct writing of arbitrary arrays of high-yielding molecular junctions under ambient conditions in a maskless fashion. The formed junctions function in quantitative yields and can afford tunneling currents with high reproducibility; they also function at low temperatures and under bent. The results reported here promise a massively parallel printing technology to construct integrated circuits based on molecular junctions with soft top contacts.

Original languageEnglish
Pages (from-to)40556-40563
Number of pages8
JournalACS Applied Materials and Interfaces
Volume9
Issue number46
DOIs
Publication statusPublished - 2017 Nov 22

Fingerprint

Tunnel junctions
Electronic scales
Nanolithography
Electrodes
Microelectrodes
Liquid metals
Encapsulation
Scaffolds
Eutectics
Integrated circuits
Printing
Monolayers
Temperature

Keywords

  • charge transport
  • maskless arbitrary writing
  • tunnel junction patterning
  • tunneling
  • untethered junction

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Maskless Arbitrary Writing of Molecular Tunnel Junctions. / Byeon, Seo Eun; Kim, Miso; Yoon, Hyo Jae.

In: ACS Applied Materials and Interfaces, Vol. 9, No. 46, 22.11.2017, p. 40556-40563.

Research output: Contribution to journalArticle

Byeon, Seo Eun ; Kim, Miso ; Yoon, Hyo Jae. / Maskless Arbitrary Writing of Molecular Tunnel Junctions. In: ACS Applied Materials and Interfaces. 2017 ; Vol. 9, No. 46. pp. 40556-40563.
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