Research Article

High thermoelectric performance in low-cost SnS0.91Se0.09 crystals

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Science  27 Sep 2019:
Vol. 365, Issue 6460, pp. 1418-1424
DOI: 10.1126/science.aax5123

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Lower-cost thermoelectrics

Thermoelectric materials convert heat to electricity, making them attractive for heat harvesting or cooling applications. However, many high-performance thermoelectrics are made of expensive or toxic materials. He et al. found that a material composed of primarily tin and sulfur could be optimized to have relatively good thermoelectric properties. Introducing about 10% selenium to tin sulfide helped tune these properties by electronic band manipulation. This material is a step toward more earth-abundant, less toxic, and lower-cost thermoelectrics than the telluride-based materials currently in use.

Science, this issue p. 1418

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