Decoupled electron–phonon transport in Ag<sub>2</sub>Se thermoelectric materials through constructing TiO<sub>2</sub>/MoS<sub>2</sub> co-decorated cell-membrane-mimic grain boundaries
Hanwen Hu, Yi-Yan Liao, Shanshan Tan, Chen Li, Jun Tang, Kun Zheng, Lei Yang
Abstract
Inspired by the cell membrane with selective permeability, we construct bio-mimic grain boundaries with TiO 2 and MoS 2 co-decoration in Ag 2 Se to decouple electron scattering from strong phonon scattering, increasing the zT value of Ag 2 Se by up to 60%.
Topics & Concepts
Grain boundaryMaterials scienceScatteringThermoelectric effectPhononMembraneThermoelectric materialsCondensed matter physicsElectronPhonon scatteringChemical physicsNanotechnologyChemical engineeringComposite materialChemistryMicrostructurePhysicsThermal conductivityOpticsThermodynamicsEngineeringQuantum mechanicsBiochemistryAdvanced Thermoelectric Materials and Devices2D Materials and ApplicationsChalcogenide Semiconductor Thin Films