Dataset of the crystal structures, electrical transport properties, and first-principles electronic structures of GeTe-rich GeTe-SbTe thermoelectric materials.

The data presented in this article relate to the research article entitled "Superior room-temperature power factor in GeTe systems via multiple valence band convergence to a narrow energy range" [T. Oku et al., Mater.

Chalcopyrite ZnSnSb: A Promising Thermoelectric Material.

Ternary compounds with a tetragonal chalcopyrite structure, such as CuGaTe, are promising thermoelectric (TE) materials. It has been demonstrated in various chalcopyrite systems, including compounds with quaternary chalcopyrite-like structures, that the lattice parameter ratio, c/ a, being exactly 2.00 to have a pseudo-cubic structure is key to increase the degeneracy at the valence band edge and ultimately achieve high TE performance.

A high performance photothermal film with spherical shell-type metallic nanocomposites for solar thermoelectric conversion.

A photothermal film (PTF) with densely assembled gold nanoparticle-fixed beads on a polymer substrate is fabricated. Remarkably, a temperature rise higher than 40 °C is achieved in the PTF with only 100 seconds of artificial solar irradiation, and the output power of the thermoelectric device was enhanced to be one order higher than that without PTF. These results will pioneer a rapid solar thermoelectric device.

Bottom-up nanostructured bulk silicon: a practical high-efficiency thermoelectric material.

The effectiveness of thermoelectric (TE) materials is quantified by the dimensionless figure of merit (zT). An ideal way to enhance zT is by scattering phonons without scattering electrons. Here we show that, using a simple bottom-up method, we can prepare bulk nanostructured Si that exhibits an exceptionally high zT of 0.

Room-temperature pressure-induced nanostructural CuInTe(2) thermoelectric material with low thermal conductivity.

A room-temperature high-pressure synthesis method is proposed as an alternative way to induce nanoscale structural disorder in the bulk thermoelectric CuInTe2 matrix. This disorder stems from the coexistence of distinct domains with different degrees and geometries of disorder at Cu/In cation sites. The lattice thermal conductivity of high-pressure-treated CuInTe2 is substantially less than that of hot-pressed CuInTe2.

Chalcopyrite CuGaTe(2): a high-efficiency bulk thermoelectric material.

CuGaTe(2) with a chalcopyrite structure demonstrates promising thermoelectric properties. The maximum figure of merit ZT is 1.4 at 950 K.