Ultra-low thermal conductivity in B<sub>2</sub>O<sub>3</sub> composited SiGe bulk with enhanced thermoelectric performance at medium temperature region
Jian Nong, Ying Peng, Chengyan Liu, Jin Bo Shen, Qing Liao, Yi Ling Chiew, Yoshifumi Oshima, Fu Cong Li, Zhongwei Zhang, Lei Miao
Abstract
All-scale scattering contributes to the reduction of lattice thermal conductivity of SiGe-based TE materials and leads to a maximum ZT value of 1.47 at 873 K, which is best one in the temperature range of 300–900 K ever reported.
Topics & Concepts
Thermoelectric effectThermal conductivityMaterials scienceAtmospheric temperature rangeThermoelectric materialsScatteringCondensed matter physicsThermalThermodynamicsComposite materialPhysicsOpticsAdvanced Thermoelectric Materials and DevicesThermal properties of materialsThermal Radiation and Cooling Technologies