Hidden structures: a driving factor to achieve low thermal conductivity and high thermoelectric performance.

The long-range periodic atomic arrangement or the lack thereof in solids typically dictates the magnitude and temperature dependence of their lattice thermal conductivity (). Compared to crystalline materials, glasses exhibit a much-suppressed across all temperatures as the phonon mean free path reaches parity with the interatomic distances therein. While the occurrence of such glass-like thermal transport in crystalline solids captivates the scientific community with its fundamental inquiry, it also holds the potential for profoundly impacting the field of thermoelectric energy conversion.

High Thermoelectric Performance in Phonon-Glass Electron-Crystal Like AgSbTe.

Achieving glass-like ultra-low thermal conductivity in crystalline solids with high electrical conductivity, a crucial requirement for high-performance thermoelectrics , continues to be a formidable challenge. A careful balance between electrical and thermal transport is essential for optimizing the thermoelectric performance. Despite this inherent trade-off, the experimental realization of an ideal thermoelectric material with a phonon-glass electron-crystal (PGEC) nature has rarely been achieved.

Hg Doping Induced Reduction in Structural Disorder Enhances the Thermoelectric Performance in AgSbTe.

Defect engineering, achieved by precise tuning of the atomic disorder within crystalline solids, forms a cornerstone of structural chemistry. This nuanced approach holds the potential to significantly augment thermoelectric performance by synergistically manipulating the interplay between the charge carrier and lattice dynamics. Here, the current study presents a distinctive investigation wherein the introduction of Hg doping into AgSbTe serves to partially curtail structural disorder.

Enhancement in Thermoelectric Performance in Ti-doped YbCoSb Skutterudites via Carrier Optimization and Phonon Anharmonicity.

YbCoSb, being a well-studied system, has shown notably high thermoelectric performance due to the Yb filler atom-driven large concentration of charge carriers and lower value of thermal conductivity. In this work, the thermoelectric performance of YbCoTiSb (where = 0, = 0 and = 0.4, = 0, 0.

Tin-Substituted Chalcopyrite: An -Type Sulfide with Enhanced Thermoelectric Performance.

The dearth of -type sulfides with thermoelectric performance comparable to that of their type analogues presents a problem in the fabrication of all-sulfide devices. Chalcopyrite (CuFeS) offers a rare example of an -type sulfide. Chemical substitution has been used to enhance the thermoelectric performance of chalcopyrite through preparation of Cu Sn FeS (0 ≤ ≤ 0.