Modulating structures to decouple thermoelectric transport leads to high performance in polycrystalline SnSe
Yuping Wang, Shulin Bai, Haonan Shi, Qian Cao, Bingchao Qin, Li‐Dong Zhao
Abstract
Introducing AgInSe 2 modifies the crystal and band structures to facilitate electrical transport of SnSe, and Ge alloying further depresses phonon transport. The effective phonon-electron decoupling leads to an ultrahigh ZT ∼ 1.6 at 773 K.
Topics & Concepts
Decoupling (probability)Thermoelectric effectCrystalliteMaterials sciencePhononCondensed matter physicsElectron transport chainThermoelectric materialsElectrical resistivity and conductivityCrystal structureElectron mobilityOptoelectronicsCrystallographyChemistryPhysicsThermodynamicsMetallurgyQuantum mechanicsEngineeringBiochemistryControl engineeringAdvanced Thermoelectric Materials and DevicesChalcogenide Semiconductor Thin Films2D Materials and Applications