Unlocking the potential of Cu3SbSe3: Ultralow thermal conductivity and enhanced thermoelectric performance

Thermoelectrics for nuclear fusion reactors: opportunities and challenges

“…The p-type Yb 14 (Mg,Mn)Sb 11 zintl compounds have attracted the attention of the TE research community due to their complex crystal structures consisting of Yb 2+ cations, isolated (Mg,Mn)Sb 4 tetrahedra, linear [Sb 3 ] 7− units, and isolated Sb 3− anions, leading to their low lattice thermal conductivities, with most of their phonon dispersion containing low velocity optical phonon modes. 74,89,90 In a more recent study, it was revealed that a second high valley degenerate ( N v = 8) band that can be utilised for hole transport at higher temperatures or at higher doping levels, is responsible for the large density-of-states effective masses of ∼3 m e , as well as the high performance of Yb 14 (Mg,Mn)Sb 11 . 66 In addition, there is a large variety of similar compounds where the Yb and Mn sites are replaced with a variety of other elements, such as Ca, Mg, Al, and Zn, providing plenty of potential for developing various solid solutions for further optimization.…”