Thermoelectric properties of n-type Cu₄Sn₇S₁₆-based compounds.

ABSTRACT: Copper-based chalcogenides have ultralow thermal conductivity and ultrahigh thermoelectric performance, but most of them are p-type semiconductors. It is urgent to develop n-type counterparts for high efficiency thermoelectric modules based on these copper based-chalcogenides. Cu₄Sn₇S₁₆ is an intrinsically n-type semiconductor with complex crystal structure and low thermal conductivity. However, its thermoelectric properties have not been well studied when compared to the well-known n-type CuFeS₂. In this work, high-quality Cu₄Sn₇S₁₆-based compounds are fabricated and their thermoelectric properties are systematically studied. Using Ag and Sb as dopants, the carrier concentration is tuned over a wide range. The el

SUBMITTER: Deng T 

PROVIDER: S-EPMC9062621 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature