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Thermal and Electrical Conductivity of Size-Tuned Bismuth Telluride Nanoparticles

Authors


  • A. S., J. V. B., and M. R. D. gratefully acknowledge the support of Penn State Center for Nanoscale Science (NSF-MRSEC, DMR-0213623). G. S. N. and J. M. acknowledge support by the US Army Medical Research and Material Command under award no. W81XWH-07-1-0708. Opinions, interpretations, conclusions, and recommendations are those of the author and are not necessarily endorsed by the US Army. TEM and FESEM work was performed at the Materials Characterization Lab in Penn State. XPS work was performed at the Cornell Center for Materials Research.

Abstract

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Size-tuned thiol-capped bismuth telluride nanoparticles (see image) are synthesized and annealed to make phase-pure nanostructured material. These materials exhibit relatively high thermoelectric power and unusually low temperature-independent thermal conductivity, the latter due to phonon scattering.

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