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Pattern Shape-Controlled Self-Assembly of Bi0.90Si0.10 Nanocrystallites

Published online by Cambridge University Press:  21 March 2011

Jiye Fang ,
Kevin L. Stokes ,
Jibao He ,
Weilie L. Zhou  and
Charles J. O'Connor
Jiye Fang
Affiliation:
Advanced Materials Research Institute, University of New Orleans, New Orleans, LA 70148, E-mail: [email protected]
Kevin L. Stokes
Affiliation:
Advanced Materials Research Institute, University of New Orleans, New Orleans, LA 70148
Jibao He
Affiliation:
Advanced Materials Research Institute, University of New Orleans, New Orleans, LA 70148
Weilie L. Zhou
Affiliation:
Advanced Materials Research Institute, University of New Orleans, New Orleans, LA 70148
Charles J. O'Connor
Affiliation:
Advanced Materials Research Institute, University of New Orleans, New Orleans, LA 70148
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Abstract

Nanometer-sized Bi0.90Sb0.10 has been, for the first time, prepared using a hightemperature organic solution reducing method. With the presence of proper capping and stabilizing agents, we were able to produce Bi0.90Sb0.10 nanoparticles as small as ∼12 nm. Nearly monodisperse distributions were obtained through a size-selective post treatment. Transmission electron microscope characterization reveals that the as-prepared particles have a highly crystalline single rhombohedral phase. Self-assembled patterns of Bi0.90Sb0.10 were successfully achieved upon evaporation of the solvent from the nanoparticle colloids. As a step toward possible applications of these particles in thermoelectric device structures, we have also demonstrated that we are able to control the pattern of Bi0.90Sb0.10 self-assembly from 2D to 1D by employing different solvent systems with varying ratios of polar and non-polar components.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 691: Symposium G – Thermoelectric Materials 2001--Research and Applications , 2001 , G10.3
Copyright
Copyright © Materials Research Society 2002

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