Abstract
Transport models have predicted that the thermal conductivity of SiGe alloys could be appreciably reduced by incorporating a discrete 40Å particles with the SiGe grains. Such a thermal conductivity reduction would lead to substantial improvements in the figure-of-merit of thermoelectric materials. This paper reports on recent results on adding 40Å particles to SiGe via a spark erosion process. Thermal conductivity reductions consistent with the transport models have been achieved, however, the improvement in figure-of-merit has not been as large as predicted.
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Scoville, N., Bajger, C., Rolfe, J. et al. Thermal Conductivity Reductions in Sige via Addition of Nanophase Particles. MRS Online Proceedings Library 351, 431–436 (1994). https://doi.org/10.1557/PROC-351-431
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DOI: https://doi.org/10.1557/PROC-351-431