Electrical transport study of phenylene-based pi-conjugated molecules in a three-terminal geometry

Jeong-O Lee*, Günther Lientschnig, Frank G.M. Wiertz, Martin Struijk, Rene A.J. Janssen, Richard Egberink, David Reinhoudt, Andrew C. Grimsdale, Klaus Müllen, Peter Hadley, Cees Dekker

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    10 Citations (Scopus)


    We fabricated three-terminal devices with conjugated molecules. Two different device layouts were used to measure both very short molecules (with one or two benzene rings) and relatively long ones (as long as 8 nm). To achieve an optimum gate effect, we used aluminum gates covered with a very thin native oxide layer. Molecules with thiol end groups were positioned between the source and drain electrodes by self-assembly. The device yield was low for short molecules, most likely due to defects in the self-assembled monolayers. Most of the devices made with short molecules did not show any gate effect at all; a small gate effect was only observed in two samples made with 1,3-benzenedithiol. Some devices showed clear negative differential conductance peaks. In some devices made with long molecules, we observed a small change of conductance with gate voltage.
    Original languageEnglish
    Title of host publicationMolecular Electronics III
    EditorsJeffrey R. Reimers
    Place of PublicationBoston, MA
    PublisherNew York Academy of Sciences
    Number of pages11
    ISBN (Print)9781573314886, 9781573314893
    Publication statusPublished - 2003
    Event6th United Engineering Foundation Conference on Molecular Electronics, Science and Technology 2002 - Key West, United States
    Duration: 15 Dec 200219 Dec 2002
    Conference number: 6

    Publication series

    NameAnnals of the New York Academy of Sciences
    ISSN (Print)0077-8923


    Conference6th United Engineering Foundation Conference on Molecular Electronics, Science and Technology 2002
    Country/TerritoryUnited States
    CityKey West


    • Transistor
    • Conjugated molecules
    • Molecular electronics

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