Charge transfer engineering to achieve extraordinary power generation in GeTe-based thermoelectric materials.

By the fine manipulation of the exceptional long-range germanium-telluride (Ge─Te) bonding through charge transfer engineering, we have achieved exceptional thermoelectric (TE) and mechanical properties in lead-free GeTe. This chemical bonding mechanism along with a semiordered zigzag nanostructure generates a notable increase of the average to a record value of ~1.73 in the temperature range of 323 to 773 K with ultrahigh maximum  ~ 2.

Synergistic Effect of Chemical Substitution and Insertion on the Thermoelectric Performance of CuVGeS Colusite.

Copper-based sulfides are promising materials for thermoelectric applications, which can convert waste heat into electricity. This study reports the enhanced thermoelectric performance of CuVGeS colusite substitution of antimony (Sb) for germanium (Ge) and introduction of copper (Cu) as an interstitial atom. The crystal structure of the solid solutions and Cu-rich compounds were analyzed by powder X-ray diffraction and scanning transmission electron microscopy.

High thermoelectric performance in low-cost SnSSe crystals.

Thermoelectric technology allows conversion between heat and electricity. Many good thermoelectric materials contain rare or toxic elements, so developing low-cost and high-performance thermoelectric materials is warranted. Here, we report the temperature-dependent interplay of three separate electronic bands in hole-doped tin sulfide (SnS) crystals.

Thermoelectric Properties and Electronic Structures of CuTiS Thiospinel and Its Derivatives: Structural Design for Spinel-Related Thermoelectric Materials.

We report the preparations, thermoelectric and magnetic properties, and electronic structures of Cu-Ti-S systems, namely, cubic thiospinel c-CuTiS ( x ≤ 0.375), a derivative cubic and Ti-rich phase c-CuTiS ( x = 0.5, 0.

Investigation on the structure and thermoelectric properties of CuTe binary compounds.

Cu2Te is a superionic conductor that belongs to the Phonon Liquid Electron Crystal class of thermoelectric (TE) materials. Despite the simple chemical formula, the crystal structures and phases in the Cu2Te system have not been understood properly. In this work, we study the structural and TE properties of Cu2Te (CT2), Cu1.

Electronic and thermoelectric properties of Zn and Se double substituted tetrahedrite.

The influence of Zn and Se double substitution on the electronic and thermoelectric properties of tetrahedrite was investigated in this study. The samples Cu11Zn1Sb4S13-xSex (x = 0.25, 0.

Thermoelectric properties of a Mn substituted synthetic tetrahedrite.

Tetrahedrite compounds Cu(12-x)Mn(x)Sb4S13 (0 ≤x≤ 1.8) were prepared by solid state synthesis. A detailed crystal structure analysis of Cu10.