Threefold enhancement of the thermoelectric figure of merit for pressure tuned Sr8Ga16Ge30
- 1 February 2001
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 89 (3) , 1730-1733
- https://doi.org/10.1063/1.1334366
Abstract
Semiconducting germanium clathrates are thermoelectric materials with cage-like structures that exhibit “phonon glass, electron crystal” behavior. We report an improvement by at least a factor of 3 in the dimensionless thermoelectric figure of merit for the clathrate semiconductor Sr8Ga16Ge30 upon compression to 7 GPa. These results suggest that there is potential for further improving the thermoelectric properties of this material at ambient pressure by chemical or other methods.This publication has 17 references indexed in Scilit:
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