Ontology highlight
ABSTRACT:
SUBMITTER: Vankayala RK
PROVIDER: S-EPMC7740100 | biostudies-literature | 2020 Dec
REPOSITORIES: biostudies-literature
Advanced science (Weinheim, Baden-Wurttemberg, Germany) 20201106 24
A record high <i>zT</i> of 2.2 at 740 K is reported in Ge<sub>0.92</sub>Sb<sub>0.08</sub>Te single crystals, with an optimal hole carrier concentration ≈4 × 10<sup>20</sup> cm<sup>-3</sup> that simultaneously maximizes the power factor (<i>PF</i>) ≈56 µW cm<sup>-1 </sup>K<sup>-2</sup> and minimizes the thermal conductivity ≈1.9 Wm<sup>-1</sup> K<sup>-1</sup>. In addition to the presence of herringbone domains and stacking faults, the Ge<sub>0.92</sub>Sb<sub>0.08</sub>Te exhibits significant modi ...[more]