High thermoelectric performance in entropy-driven Ge<sub>1−2<i>x</i>−<i>y</i></sub>Pb<sub><i>x</i></sub>Sn<sub><i>x</i></sub>Sb<sub><i>y</i></sub>Te
Animesh Das, Paribesh Acharyya, Subarna Das, Kanishka Biswas
Abstract
An ultrahigh zT of 2.5 at 723 K is achieved in an entropy driven Ge 0.84 Pb 0.025 Sn 0.025 Sb 0.11 Te sample showing a promising output power density (PD max ) of ∼590 mW cm −2 at Δ T = 448 K in a fabricated double leg device.
Topics & Concepts
Materials scienceSeebeck coefficientThermoelectric effectAnalytical Chemistry (journal)Condensed matter physicsPhysicsThermodynamicsChemistryChromatographyAdvanced Thermoelectric Materials and DevicesPhase-change materials and chalcogenidesChalcogenide Semiconductor Thin Films