Doping is usually the first step to tailor thermoelectrics. It enables precise control of the
charge‐carrier concentration and concomitant transport properties. Doping should also turn …

The ability of substitution atoms to decrease thermal conductivity is usually ascribed to the
enhanced phonon-impurity scattering by assuming the original phonon dispersion relations …

The traditional thermoelectric material GeTe has drawn much attention recently because of
the reported high thermoelectric performance of the rhombohedral phase in low-temperature …

In recent years, the thermoelectric properties of SnSe crystals have been rather impressive,
while those of polycrystalline SnSe are not ideal due to the grain boundary scattering, which …

GeTe and its derivatives constituting Pb-free elements have been well known as potential
thermoelectric materials for the last five decades, which offer paramount technological …

Modification of crystal symmetry induced by chemical doping or alloying is well known to
optimize the charge carrier transport properties in thermoelectric materials. Historically, the …

Thermoelectric materials can achieve the interconversion of electricity and heat, providing
potential for power generation. It is a challenge to elevate conversion efficiency due to the …

GeTe experiences phase transition between cubic and rhombohedral through distortion
along the [111] direction. Cubic GeTe shares the similarity of a two-valence-band structure …

Orthorhombic GeSe is a promising thermoelectric material. However, large band gap and
strong covalent bonding result in a low thermoelectric figure of merit, zT≈ 0.2. Here, we …

Rhombohedral GeTe can be approximated as the directional distortion of the cubic GeTe
along [111]. Such a symmetry-breaking of the crystal structure results in an opposite …