Reduced thermal conductivity of Bi-In-Te thermoelectric alloys in a eutectic lamellar structure

Growth and Thermal Conductivity Study of CuCr2Se4-CuCrSe2 Hetero-Composite Crystals

“…Generally speaking, hetero-composites/heterostructures are an effective way to give rise to the novel functionalities unavailable in single-phase crystals [19,20]. For example, SnSe-SnSe 2 heterostructures decrease the thermal conductivity of SnSe dramatically [19].…”

Anisotropy of Microstructure and Its Influence on Thermoelectricity: The Case of Cu2Te–Sb2Te3 Eutectic

“…Microstructure preponderantly influences the thermoelectric properties of materials. − Some of the strategies for modifying the microstructure for tuning these properties are solidification, , spinodal decomposition, ,, and solid-state precipitations. − Solidification can produce a wide range of microstructural features, from amorphous to multiphase to single crystal during liquid to solid transformation. The temperature gradient across the solid–liquid interface and its growth velocity are the two important processing parameters during solidification that influence the evolution of the microstructure. , Microstructural modifications through the cooling rate control to enhance the thermoelectric performance have gained attention in the recent past; − however, these efforts are geared toward reducing the contribution of the lattice thermal conductivity to the total thermal conductivity (κ) to enhance the thermoelectric figure of merit zT (where zT = S 2 σ T /κ).…”

“…Eutectics are a common feature in many phase diagrams and are utilized for various applications. ,,− During the solidification of eutectic systems, , multiple phases self-organize into characteristic spacings based on the solidification velocity and growth along the imposed temperature gradient. Such alignment of the eutectic phases can exhibit anisotropy of the microstructure and hence the directional dependence of the properties, including thermoelectric transport properties.…”

“…Microstructure preponderantly influences the thermoelectric properties of materials. 1−7 Some of the strategies for modifying the microstructure for tuning these properties are solidification, 8,9 spinodal decomposition, 1,10,11 and solid-state precipitations. 12−15 Solidification can produce a wide range of microstructural features, from amorphous to multiphase to single crystal during liquid to solid transformation.…”