Antimony-based Zintl compounds AM₂Sb₂ (A=Ca, Sr, Ba, Yb, Eu; M=Mg, Zn, Cd, Mn), which enable a broad range of manipulation on electrical and thermal transport properties, are considered as an important class of thermoelectric materials. Phonon and carrier transport engineering were realized in YbMg₂Sb₂via equivalent and alio-valent substitution of Zn and Ag, respectively. The room-temperature thermal conductivity reduces from 1.96 to 1.15 W m⁻¹ K⁻¹ for YbMg_2-xZn_xSb₂ due to the mass and strain fluctuation through the formation of the absolute solid solution of YbMg₂Sb₂-YbZn₂Sb₂. Furthermore, the carrier concentration has been further optimized by Ag doping (from 0.42×10¹⁹ to 7.72×10¹⁹ cm⁻³ at room temperature), and thus the electrical conductivity and the power factor are enhanced effectively. The integrated aspects make the dimensionless figure of merit (zT) reach 0.48 at 703 K, which is 60% higher than the pristine YbMgZnSb₂ sample.

基于锑的Zintl化合物AM ₂ Sb ₂（A = Ca，Sr，Ba，Yb，Eu; M = Mg，Zn，Cd，Mn）被认为是能够实现广泛的电和热传输性能控制的化合物一类重要的热电材料。YbMg ₂ Sb _2中的声子和载流子传输工程分别通过锌和银的等价和异价取代实现。YbMg _{2- x} Zn _x Sb ₂的室温热导率从1.96 W 1.1 W m ^-1 K ^-1降低，这是由于通过形成YbMg ₂的绝对固溶体引起的质量和应变波动Sb ₂ -YbZn ₂ Sb ₂。此外，通过Ag掺杂（在室温下从0.42×10 ¹⁹到7.72×10 ¹⁹ cm ^-3）进一步优化了载流子浓度，因此有效地提高了电导率和功率因数。综合方面使得无量纲的品质因数（zT）在703 K时达到0.48，比原始的YbMgZnSb ₂样品高60％。