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Self-Assembled Monolayers Impact Cobalt Interfacial Structure in Nanoelectronic Junctions



Sujitra J. Pookpanratana, Leigh Lydecker, Curt A. Richter, Christina A. Hacker


The formation of molecular monolayers on template-stripped cobalt surfaces is reported. The quality of the alkane-based molecular structure was confirmed through spectroscopic measurements. We find that the self-assembly of bifunctional molecules has limited directional assembly. Carboxylic acid-functionalized molecules form a monolayer and influence the chemical and electronic structure of the Co surface. We find that the Co atoms bonded to the carboxylic acid become reduced to Co metal. Electrical measurements of Co/molecule/Si junctions are compared to that of Au/molecule/Si junctions, and find that the transport properties are very sensitive to the Co/molecule interface.
Journal of Physical Chemistry C


molecular electronics, self-assembled monolayers, surface science


Pookpanratana, S. , Lydecker, L. , Richter, C. and Hacker, C. (2015), Self-Assembled Monolayers Impact Cobalt Interfacial Structure in Nanoelectronic Junctions, Journal of Physical Chemistry C, [online], (Accessed July 20, 2024)


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Created March 5, 2015, Updated November 10, 2018