Metavalently bonded tellurides: the essence of improved thermoelectric performance in elemental Te.

ABSTRACT: Elemental Te is important for semiconductor applications including thermoelectric energy conversion. Introducing dopants such as As, Sb, and Bi has been proven critical for improving its thermoelectric performance. However, the remarkably low solubility of these elements in Te raises questions about the mechanism with which these dopants can improve the thermoelectric properties. Indeed, these dopants overwhelmingly form precipitates rather than dissolve in the Te lattice. To distinguish the role of doping and precipitation on the properties, we have developed a correlative method to locally determine the structure-property relationship for an individual matrix or precipitate. We reveal that the conspicuous enhancement of electrical conductivity and power factor of bulk Te stems from the d

SUBMITTER: An D 

PROVIDER: S-EPMC11014947 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature