Spinodal decomposition and nucleation and growth as a means to bulk nanostructured thermoelectrics: enhanced performance in Pb(1-x)Sn(x)Te-PbS.

@article{Androulakis2007SpinodalDA,
  title={Spinodal decomposition and nucleation and growth as a means to bulk nanostructured thermoelectrics: enhanced performance in Pb(1-x)Sn(x)Te-PbS.},
  author={John Androulakis and Chia-Her Lin and Hun-Jin Kong and Ctirad Uher and Chun-I Wu and Timothy M Hogan and Bruce Allan Cook and Thierry Caillat and Konstantinos K M Paraskevopoulos and Mercouri G Kanatzidis},
  journal={Journal of the American Chemical Society},
  year={2007},
  volume={129 31},
  pages={9780-8}
}
The solid-state transformation phenomena of spinodal decomposition and nucleation and growth are presented as tools to create nanostructured thermoelectric materials with very low thermal conductivity and greatly enhanced figure of merit. The systems (PbTe)(1-x)(PbS)(x) and (Pb(0.95)Sn(0.05)Te)(1-x)(PbS)(x) are not solid solutions but phase separate into PbTe-rich and PbS-rich regions to produce coherent nanoscale heterogeneities that severely depress the lattice thermal conductivity. For x… CONTINUE READING
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