Statistical analysis of metal-molecule contacts in alkyl molecular junctions

Sulfur versus Selenium end-group

Hana Yoo, Jungseok Choi, Gunuk Wang, Tae Wook Kim, Jaegeun Noh, Takhee Lee

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We fabricated a large number of microscale via-hole structure molecular devices (2240 devices) using octane-Se [CH 3(CH 2) 7Se] self assembled monolayers (SAMs) and compared their charge transport properties with those of octane-S [CH 3(CH 2) 7S] SAMs molecular devices in terms of current density, resistance, and tunneling decay coefficient. The device yield of the "working" octane-Se molecular devices was found to be ∼ 1.7% (38/2240), which was similar to the yield of ∼1.1% (50/4480) for octane-S devices. Our statistical analysis revealed that for octane-Se devices the tunneling current was slightly smaller and the low-bias resistance and decay coefficient were slightly larger than those for octane-S devices. The standard deviations of these transport parameters of octane-Se devices were found to be broader than those for octane-S devices due to irregularity of the binding sites of octane-Se on Au electrode surface.

Original languageEnglish
Pages (from-to)7012-7015
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume9
Issue number12
DOIs
Publication statusPublished - 2009 Dec 1
Externally publishedYes

Fingerprint

Selenium
Self assembled monolayers
selenium
Sulfur
octanes
statistical analysis
Statistical methods
sulfur
Metals
Equipment and Supplies
Molecules
Binding sites
metals
Transport properties
Molecular structure
Charge transfer
molecules
Current density
Electrodes
methylidyne

Keywords

  • A molecular electronics
  • Alkanethiols
  • Device yield

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Chemistry(all)
  • Materials Science(all)
  • Bioengineering
  • Biomedical Engineering

Cite this

Statistical analysis of metal-molecule contacts in alkyl molecular junctions : Sulfur versus Selenium end-group. / Yoo, Hana; Choi, Jungseok; Wang, Gunuk; Kim, Tae Wook; Noh, Jaegeun; Lee, Takhee.

In: Journal of Nanoscience and Nanotechnology, Vol. 9, No. 12, 01.12.2009, p. 7012-7015.

Research output: Contribution to journalArticle

Yoo, Hana ; Choi, Jungseok ; Wang, Gunuk ; Kim, Tae Wook ; Noh, Jaegeun ; Lee, Takhee. / Statistical analysis of metal-molecule contacts in alkyl molecular junctions : Sulfur versus Selenium end-group. In: Journal of Nanoscience and Nanotechnology. 2009 ; Vol. 9, No. 12. pp. 7012-7015.
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