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Deposition of Ordered Arrays of Metal Sulfide Nanoparticles in Nanostructures Using Supercritical Carbon Dioxide

Published online by Cambridge University Press:  31 January 2011

Joanna Wang ,
Alexander B. Smetana ,
John J. Boeckl ,
Gail J. Brown  and
Chien M. Wai
Joanna Wang
Affiliation:
jswang@uidaho.edu, University of Idaho, Chemistry, Moscow, Idaho, United States
Alexander B. Smetana
Affiliation:
alexands@uidaho.edu, University of Idaho, Chemistry, Moscow, Idaho, United States
John J. Boeckl
Affiliation:
john.boeckl@wpafb.af.mil, WPAFB, Materials and Manufacturing Directorate, Dayton, Ohio, United States
Gail J. Brown
Affiliation:
gail.brown@wpafb.af.mil, WPAFB, Materials and Manufacturing Directorate, Dayton, Ohio, United States
Chien M. Wai
Affiliation:
cwai@uidaho.edu, University of Idaho, Chemistry, Moscow, Idaho, United States
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Abstract

Silver sulfide (Ag2S) and cadmium sulfide (CdS) nanoparticles of adjustable sizes are synthesized using a water-in-hexane microemulsion method and stabilized by dodecanethiol. The stabilized metal sulfide nanoparticles can be deposited homogenously on flat substrates forming ordered 2D arrays in supercritical fluid carbon dioxide (Sc-CO2). The use of Sc-CO2 leaves the particles unaffected by de-wetting effects and surface tension caused by traditional solvents and produces uniform arrays. The Sc-CO2 deposition technique can effectively fill the metal sulfide nanoparticles into nanoscale features, which is difficult to achieve by conventional solvent evaporation methods.

Keywords

chemical vapor deposition (CVD) (deposition)semiconductingnanostructure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1196: Symposium C – Large-Area Processing and Patterning for Optical. Photovoltaic and Electronic Devices-2009 , 2009 , 1196-C06-23
Copyright
Copyright © Materials Research Society 2010

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