Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Self-Assembled Monolayers Impact Cobalt Interfacial Structure in Nanoelectronic Junctions

Published

Author(s)

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

Abstract

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.
Citation
Journal of Physical Chemistry C
Volume
119
Issue
12

Keywords

molecular electronics, self-assembled monolayers, surface science

Citation

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], https://doi.org/10.1021/acs.jpcc.5b00816 (Accessed September 22, 2021)
Created March 5, 2015, Updated November 10, 2018