Non-equilibrium processing leads to record high thermoelectric figure of merit in PbTe–SrTe
Northwestern University · Beihang University · +2 more institutions
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Abstract
The broad-based implementation of thermoelectric materials in converting heat to electricity hinges on the achievement of high conversion efficiency. Here we demonstrate a thermoelectric figure of merit ZT of 2.5 at 923 K by the cumulative integration of several performance-enhancing concepts in a single material system. Using non-equilibrium processing we show that hole-doped samples of PbTe can be heavily alloyed with SrTe well beyond its thermodynamic solubility limit of
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10Topics & keywords
Topics
Keywords
- Thermoelectric effect
- Figure of merit
- Materials science
- Solubility
- Thermoelectric materials
- Doping
- Band gap
- Energy conversion efficiency
UN Sustainable Development Goals
- Affordable and clean energy
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