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)

    Abstract

    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
    Pages122-132
    Number of pages11
    ISBN (Print)9781573314886, 9781573314893
    DOIs
    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
    PublisherWiley-Blackwell
    Volume1006
    ISSN (Print)0077-8923

    Conference

    Conference6th United Engineering Foundation Conference on Molecular Electronics, Science and Technology 2002
    CountryUnited States
    CityKey West
    Period15/12/0219/12/02

      Fingerprint

    Keywords

    • Transistor
    • Conjugated molecules
    • Molecular electronics

    Cite this

    Lee, J-O., Lientschnig, G., Wiertz, F. G. M., Struijk, M., Janssen, R. A. J., Egberink, R., ... Dekker, C. (2003). Electrical transport study of phenylene-based pi-conjugated molecules in a three-terminal geometry. In J. R. Reimers (Ed.), Molecular Electronics III (pp. 122-132). (Annals of the New York Academy of Sciences; Vol. 1006). Boston, MA: New York Academy of Sciences. https://doi.org/10.1196/annals.1292.008