High thermoelectric performance in metallic NiAu alloys via interband scattering.

ABSTRACT: Thermoelectric materials seamlessly convert thermal into electrical energy, making them promising for power generation and cooling applications. Although historically the thermoelectric effect was first discovered in metals, state-of-the-art research focuses on semiconductors. Here, we discover unprecedented thermoelectric performance in metals and realize ultrahigh power factors up to 34 mW m^-1 K^-2 in binary Ni_xAu_1-x alloys, more than twice larger than in any bulk material above room temperature, reaching zT_max ∼ 0.5. In metallic Ni_xAu_1-x alloys, large Seebeck coefficients originate from electron-hole selective scattering of Au s electrons into more localized Ni d

SUBMITTER: Garmroudi F 

PROVIDER: S-EPMC10881022 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature