Statistical Analysis of Electronic Transport Through Chemisorbed Versus Physisorbed Alkanethiol Self-Assembled Monolayers

Tae Wook Kim, Gunuk Wang, Takhee Lee

Research output: Contribution to journalArticle

5 Citations (Scopus)


We fabricate microscale via-hole structure molecular electronic devices using various lengths of alkanemonothiol and alkanedithiol self-assembled monolayers (SAMs) and characterize their charge transport properties. From the statistical analysis of the transport properties of these SAMs, we have found that the conductance of alkanedithiols is higher about an order of magnitude than that of alkanemonothiols, which is due to the different nature of metal-molecule contacts, i.e., physisorbed versus chemisorbed contacts. However, the transport decay coefficients that can be obtained from the length-dependent transport characterization are almost identical for the two molecular systems.

Original languageEnglish
Pages (from-to)140-144
Number of pages5
JournalIEEE Transactions on Nanotechnology
Issue number2
Publication statusPublished - 2008 Mar 8
Externally publishedYes



  • Electronic transport
  • molecular electronics
  • selfassembled monolayer

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering

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