Achieving High Thermoelectric Performance in Rare-Earth Element-Free CaMg2Bi2 with High Carrier Mobility and Ultralow Lattice Thermal Conductivity
(a) Temperature-dependent the lattice thermal conductivity of BaZny () samples. (b) Comparison of between this work and other reported literature [33, 42–44]. The dotted lines represent the theoretical minimum lattice thermal conductivity min (0.35 W m-1 K-1 for Cahill model and 0.14 W m-1 K-1 for Bvk-Pei model) . (c) Composition dependent at 300 K for Bax () and BaZny () samples. (d) The dimensionless figure of merit as a function of temperature and content.