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© 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.
|Number of pages||8|
|Journal||Journal of Materials Chemistry C|
|Publication status||Published - 14 Oct 2016|
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- 2 Finished
From the Electronics of Molecules to Molecular Electronics
Low, P. & Nichols, R.
1/01/14 → 31/12/17
From Beaker to Bit: New Platforms for Molecular Electronics
1/01/12 → 30/06/17