Thermoelectric Power of Layered Chalcogenides GaTe Crystals

Hierarchical Architecturing for Layered Thermoelectric Sulfides and Chalcogenides

Sulfides are promising candidates for environment-friendly and cost-effective thermoelectric materials. In this article, we review the recent progress in all-length-scale hierarchical architecturing for sulfides and chalcogenides, highlighting the key strategies used to enhance their thermoelectric performance. We primarily focus on TiS₂-based layered sulfides, misfit layered sulfides, homologo...

Lattice Vibration of Layered GaTe Single Crystals

The effect of interlayer interaction on in-layer structure of laminar GaTe crystals was studied according to the lattice vibration using micro-Raman analysis. The results were also confirmed by the first principle calculations. Accordingly, the relationship between lattice vibration and crystal structure was established. Ten peaks were observed in the micro-Raman spectra from 100 cm−1 to 300 cm...

High thermoelectric power factor in two-dimensional crystals of MoS2

Kedar Hippalgaonkar,1,2,3 Ying Wang,1 Yu Ye,1 Diana Y. Qiu,2,4 Hanyu Zhu,1 Yuan Wang,1,2 Joel Moore,2,4 Steven G. Louie,2,4 and Xiang Zhang1,2,* 1NSF Nano-scale Science and Engineering Center (NSEC), 3112 Etcheverry Hall, University of California, Berkeley, California 94720, USA 2Material Sciences Division, Lawrence Berkeley National Laboratory (LBNL), 1 Cyclotron Road, Berkeley, California 947...

Micro- and Macromechanical Properties of Thermoelectric Lead Chalcogenides.

Both n- and p-type lead telluride (PbTe)-based thermoelectric (TE) materials display high TE efficiency, but the low fracture strength may limit their commercial applications. To find ways to improve these macroscopic mechanical properties, we report here the ideal strength and deformation mechanism of PbTe using density functional theory calculations. This provides structure-property relations...

Phase transition enhanced thermoelectric figure-of-merit in copper chalcogenides