Towards a metallic top contact electrode in molecular electronic devices exhibiting a large surface coverage by photoreduction of silver cations

Santiago Martín, Luz M. Ballesteros, Alejandro González-Orive, Hugo Oliva, Santiago Marqués-González, Matteo Lorenzoni, Richard J. Nichols, Francesc Pérez-Murano, Paul J. Low, Pilar Cea

    Research output: Contribution to journalArticleResearchpeer-review

    9 Citations (Scopus)

    Abstract

    © 2016 The Royal Society of Chemistry. In this contribution the photoreduction of silver ions coordinated onto a Langmuir-Blodgett monolayer is presented as an effective method for the deposition of the top contact electrode in metal/monolayer/metal devices. Silver cations were incorporated from an aqueous AgNO3 sub-phase of Langmuir films of 4,4′-(1,4-phenylenebis(ethyne-2,1-diyl))dibenzoic acid upon the transference of these films onto a metallic substrate. Subsequent irradiation of the silver-ion functionalized Langmuir-Blodgett films with 254 nm light results in the photoreduction of silver cations to produce metallic silver nanoparticles, which are distributed over the organic monolayer and exhibit a surface coverage as large as 76% of the monolayer surface. Electrical properties of these metal/monolayer/metal devices were determined by recording I-V curves, which show a sigmoidal behaviour indicative of well-behaved junctions free of metallic filaments and short-circuits. The integrity of the organic monolayer upon the irradiation process and formation of the silver top-contact electrode has also been demonstrated through cyclic voltammetry experiments.
    Original languageEnglish
    Pages (from-to)9036-9043
    JournalJournal of Materials Chemistry C
    Volume4
    Issue number38
    DOIs
    Publication statusPublished - 1 Jan 2016

    Fingerprint Dive into the research topics of 'Towards a metallic top contact electrode in molecular electronic devices exhibiting a large surface coverage by photoreduction of silver cations'. Together they form a unique fingerprint.

  • Cite this

    Martín, S., Ballesteros, L. M., González-Orive, A., Oliva, H., Marqués-González, S., Lorenzoni, M., Nichols, R. J., Pérez-Murano, F., Low, P. J., & Cea, P. (2016). Towards a metallic top contact electrode in molecular electronic devices exhibiting a large surface coverage by photoreduction of silver cations. Journal of Materials Chemistry C, 4(38), 9036-9043. https://doi.org/10.1039/c6tc03319a