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Synthesis and Properties of Lead Selenide Nanocrystal Solids

Published online by Cambridge University Press:  21 March 2011

Feng Chen ,
Kevin L. Stokes ,
Weilie Zhou ,
Jiye Fang  and
Christopher B. Murray
Feng Chen
Affiliation:
Advanced Material Research Institute, University of New Orleans, New Orleans, LA 70148, USA
Kevin L. Stokes
Affiliation:
Advanced Material Research Institute, University of New Orleans, New Orleans, LA 70148, USA
Weilie Zhou
Affiliation:
Advanced Material Research Institute, University of New Orleans, New Orleans, LA 70148, USA
Jiye Fang
Affiliation:
Advanced Material Research Institute, University of New Orleans, New Orleans, LA 70148, USA
Christopher B. Murray
Affiliation:
IBM T.J. Watson Research Center, Yorktown Heights, NY 10598, USA
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Abstract

We present results of our investigation of the synthesis, structural properties and electrical transport properties of lead selenide (PbSe) nanoparticle-derived solids. Stable colloidal solutions containing crystalline PbSe particles with sizes on the order of 5-10 nm were synthesized using an organometallic lyothermal growth method in high-temperature organic solvents (100∼200 °C). The nanoparticle powders have been characterized by X-ray scattering (WAXS/SAXS), electron microscopy and optical absorption. Thin lms were formed by controlled precipitation of the nanoparticles from solution onto insulating substrates. Electrical resistance (R) and Seebeck coecient (S) for conductive PbSe lms from dierent annealing conditions were studied and compared. We were able to obtain conductive PbSe lms from colloids by low temperature annealing which did not disturb the nanoparticle self-assembly.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 691: Symposium G – Thermoelectric Materials 2001--Research and Applications , 2001 , G10.2
Copyright
Copyright © Materials Research Society 2002

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References

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