Electrical conductivity and thermoelectric power of heavily doped P-type CdSb

Realization of non-equilibrium process for high thermoelectric performance Sb-doped GeTe

“…At low temperature, the carrier mobility is almost independent with the temperature, displaying a neutral impurity scattering as the dominant scattering mechanism, while with further increase of the temperature, the carrier mobility decreases sharply following a T À3/2 dependence characteristic of acoustic phonon scattering as dominant scattering mechanism. The carrier mobility decreases with the increase of Sb content due to the enhanced alloying scattering [59]. It should be worth mentioning that despite that MS-SPS process refines the grain size, enhancing the grain boundary scattering, the carrier mobility of MS-SPS samples with the same Sb content is still comparable with that of TM sample.…”

Transport Properties of CdSb Alloys with a Promising Thermoelectric Performance

“…Composition-dependent Hall carrier concentration for Cd 1– y Ag y Sb and Cd 0.99– x Zn x Ag 0.01 Sb (a), temperature-dependent Hall coefficient and Hall mobility (b), Hall carrier concentration-dependent Seebeck coefficient at different temperatures for CdSb materials (c) with a comparison to the literature results ,,,, and density of state effective mass ( m *) and deformation potential coefficient ( E def ) (d) for Cd 0.99– x Zn x Ag 0.01 Sb.…”

“…More details of the SPB model can be found elsewhere . According to the literature band calculations, the degeneracy ( N v ) of the valence bands is 2 for both CdSb , and ZnSb; this enables the SPB model to understand the electronic transport properties more quantitatively. Temperature-dependent density-of-state effective mass ( m *) and deformation potential coefficient ( E def ) are shown in Figure d.…”

“…As an important sister compound of ZnSb, CdSb crystallizes in the same structure and shows a very similar band structure, which may lead to comparable potential as that of thermoelectric ZnSb. Available experimental work on CdSb mainly focuses on the electronic , and optical properties in the form of single crystals. − Although there are much fewer reports on the thermoelectric properties of polycrystalline CdSb, the work by Yang et al is particularly interesting due to both a high zT achieved and a revelation of the multicenter bonding as the origin for the intrinsic low lattice thermal conductivity.…”

On the Dopability of Semiconductors and Governing Material Properties

“…Light and dark shades of gray distinguish the band-gap value. Data are obtained from refs − , and for details, see Table S1 in the Supporting Information (SI).…”