Phase Boundary Mapping of Tin‐Doped ZnSb Reveals Thermodynamic Route to High Thermoelectric Efficiency

Abstract

has driven the discovery and development of new thermoelectric materials with less expensive and more environmentally friendly elements. Zn, Sb, and Sn are inexpensive, relatively non-toxic, and sufficiently abundant elements to be viable for commercial applications. [2] The efficient use of thermoelectric materials depends upon its dimensionless figure of merit, zT:

Symmetry breaking in Ge1−xMnxTe and the impact on thermoelectric transport

“…Numerous studies highlight the process and importance of phase boundary mapping using impurity phases. 32–36…”

“…Numerous studies highlight the process and importance of phase boundary mapping using impurity phases. [32][33][34][35][36] The high intensity and sharpness of the X-ray diffraction peaks (ESI Fig. S13-S33 †) indicates that the thermal treatment was sufficient to bring samples to an equilibrium state suitable for further characterization.…”

Controlling Defects to Achieve Reproducibly High Ionic Conductivity in Na3SbS4 Solid Electrolyte

“…thermoelectrics). [57][58][59][60][61] As demonstrated above, through the preparation of a series of samples with systematically controlled nominal compositions, it is possible to map out the locations of the boundaries between phase regions in the nominal-composition space based on the existence of side phases, which enables us to correlate the observed physical properties to their corresponding thermodynamic states. Furthermore, utilization of samples that are constrained with zero degrees of freedom (in thermodynamic equilibrium) can make the resulting properties resilient to compositional variations due to the elemental off-stoichiometry during the preparation.…”

Thermoelectric properties and low thermal conductivity of Zintl compound Yb10MnSb9

“…, requires optimization of oen conicting material properties (electrical conductivity (s), Seebeck coefficient (a), and thermal conductivity (k)). 2 Zintl compounds are a specic type of material rst considered by Eduard Zintl [3][4][5] that include many thermoelectric materials such as 14-1-11 compounds, [6][7][8][9] Ca 3 AlSb 3 , 10 Ba 8 -Ga 16Àx Ge 30+x clathrates, 11 Mg 3 Sb 2 , 12 Mg 2 Si, 13 ZnSb, 14 Zn 4 Sb 3 , 15,16 and lled skutterudites. 17 These materials exist along the border between metallic and nonmetallic behavior and have unit cells consisting of electronegative anions with electropositive cations that donate their valence electrons.…”