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Ternary AgSbTe2 materials are frequently reported to show a promising thermoelectric performance, due to the intrinsically low lattice thermal conductivity and complex valence band structure. However, stoichiometric AgSbTe2 is found to be thermodynamically unstable and would partially decompose into Ag2Te and Sb2Te3 during thermal cycling. Instead, Ag0.366Sb0.558Te is the composition for stabilizing...
Many efforts are recently devoted on improving thermoelectric SnTe as an environment—friendly alternative to conventional PbTe and successful approaches include valence band convergence, nanostructuring, and substantial/interstitial defects. Among these strategies, alloying SnTe with MnTe enables the most effective reduction in the valence band offset (between L and Σ) for a convergence due to its...
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