Chiral Twist Interface Modulation Enhances Thermoelectric Properties of Tellurium Crystal.

ABSTRACT: Manipulating the grain boundary and chiral structure of enantiomorphic inorganic thermoelectric materials facilitates a new degree of freedom for enhancing thermoelectric energy conversion. Chiral twist mechanisms evolve by the screw dislocation phenomenon in the nanostructures; however, contributions of such chiral transport have been neglected for bulk crystals. Tellurium (Te) has a chiral trigonal crystal structure, high band degeneracy, and lattice anharmonicity for high thermoelectric performance. Here, Sb-doped Te crystals are grown to minimize the severe grain boundary effects on carrier transport and investigate the interface of chiral Te matrix and embedded achiral Sb₂Te₃ precipitates, which induce unusual lattice twists. The low grain boundary scattering and

SUBMITTER: Abbey S 

PROVIDER: S-EPMC11425292 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature