Rare-Earth Nd Inducing Record-High Thermoelectric Performance of (GeTe) ₈₅ (AgSbTe ₂ ) ₁₅

Transport properties and valence band feature of high-performance (GeTe)85(AgSbTe2)15 thermoelectric materials

This paper aims at elucidating the origin of the high thermoelectric power factor of p-type (AgxSbTex/2+1.5)15(GeTe)85 (TAGS) thermoelectric materials with 0.46 x 6 1.2. All samples exhibit good thermoelectric figures of merit (zT) which reach 1.5 at 700K for x = 0.6. Thermoelectric and thermomagnetic transport properties (electrical resistivity, Seebeck, Hall and transverse Nernst–Ettinghausen...

Electronic origin of the high thermoelectric performance of GeTe among the p-type group IV monotellurides

PbTe and SnTe in their p-type forms have long been considered high-performance thermoelectrics, and both of them largely rely on two valence bands (the first band at L point and the second one along the Σ line) participating in the transport properties. This work focuses on the thermoelectric transport properties inherent to p-type GeTe, a member of the group IV monotellurides that is relativel...

Resonant level-induced high thermoelectric response in indium-doped GeTe

Resonant levels are promising for high-performance single-phase thermoelectric materials. Recently, phase-change materials have attracted much attention for energy conversion applications. As the energetic position of resonant levels could be temperature dependent, searching for dopants in phase-change materials, which can introduce resonant levels in both low and high temperature phases, remai...

Enhancement of Thermopower of TAGS-85 High- Performance Thermoelectric Material by Doping with the Rare Earth Dy

Structural and Thermoelectric Properties of Rare-Earth-Substituted Sr3Fe2O7

The structural and thermoelectric properties of rare-earth (Sm)-substituted Ruddlesden­Popper-type Sr3Fe2O7, Sr31xSmxFe2O7 (SSFO, x = 0, 0.1, 0.15), were investigated by measuring the temperature dependence of its crystallographic parameters, electrical conductivity, and Seebeck coefficient (S). A sharp increase in electrical conductivity (·) up to 60 S/cm (log · = 1.78 S/cm) at 400­500°C occur...