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The Effect of the Dielectric Constant of a Solution of CdSe Quantum Dots on Electrophoretic Deposition of the Dots

Published online by Cambridge University Press:  20 March 2013

Nathanael J. Smith
Nathanael J. Smith*
Affiliation:
Department of Physics and Astronomy, Middle Tennessee State University, 1301 East Main St., Murfreesboro, TN 37132
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Abstract

The effect on film quality of the dielectric constant εb of the bath solution used for electrophoretic deposition of CdSe quantum dots (QDs) was investigated. Various combinations of solvents yielding different εb were tested, with the best films produced by a bath consisting of hexanes and acetone. Two different types of film were observed, depending on the volume fraction of acetone in the bath: thin, but strongly adhered films for εb < 12 and thick but loose films for εb > 12. This behavior is explained in terms of the rate at which QDs arrive at the surface of the electrode, which depends on the electrophoretic mobility of the QDs and therefore also the dielectric constant of the bath.

Keywords

electrodepositionthin filmnanostructure
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1493: Symposium E/H – Photovoltaic Technologies, Devices and Systems Based on Inorganic Materials, Small Organic Molecules and Hybrids , 2013 , pp. 133 - 138
Copyright
Copyright © Materials Research Society 2013 

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