Topic
Seebeck coefficient
About: Seebeck coefficient is a research topic. Over the lifetime, 19844 publications have been published within this topic receiving 414702 citations. The topic is also known as: thermopower & thermoelectric power.
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TL;DR: In this paper, a system for dynamical measurement of Seebeck coefficients materials with resistivities-cm is described, with particular attention given to the instrumentation problem, which shows the system's performance on NiO and VgO.
Abstract: A system for dynamical measurement of Seebeck coefficients materials with resistivities-cm is described, with particular attention given to the instrumentation problem. Results are presented which show the system's performance on NiO and VgO.
9 citations
19 Jun 2005
TL;DR: In this paper, the Ruddlesden-Popper phase (SrTiO/sub 3/)/sub n/(SrO)/sub m/ with n=2, m=1 is considered as an advanced thermoelectric layered material based on ceramic semiconductors.
Abstract: The Ruddlesden-Popper phase (SrTiO/sub 3/)/sub n/(SrO)/sub m/ with n=2, m=1 is considered as an advanced thermoelectric layered material based on ceramic semiconductors and combines the high electric conductivity of SrTiO/sub 3/ with the low thermal conductivity of SrO due to the concept of nanoblock integration. However, it still need to be improved: in SrTiO/sub 3/ the effective mass as one of main factors for the Seebeck coefficient can be enlarged through substitution by heavy elements as calculated from the curvature of the electronic band structure. The effective mass increases with the substitution of Ba on the A-site and V on the B-site in SrTiO/sub 3/. For the RP-phases STO327, STO214 it shows anisotropy of more than a factor of two for in-plane and out-of-plane-directions and the Sr-O and Ti-O bonds show a stronger localization at the SrO/SrTiO/sub 3/ interface than in SrTiO/sub 3/-bulk, but the average effective mass is rather low.
9 citations
TL;DR: In this paper, the thermoelectric properties of the Zn-Sn-Sb ternary system were investigated and the Seebeck coefficient was shown to be relatively large.
Abstract: In the Zn-Sn-Sb ternary system, Zn4Sb3, ZnSnSb2, and ZnSb have attracted attentions as advanced thermoelectric materials. Zn-Sn-Sb based alloys with various compositions were fabricated and the thermoelectric properties were investigated. That system is composed by orthorhombic ZnSb phase, tetragonal ZnSnSb2 phase with chalcopyrite structure, and rhombohedral SnSb phase. Large Sn content increases volume fraction of the metallic SnSb phase, which degenerate the powar factor. The ZnSb based alloy shows relatively large Seebeck coefficient. Sn substitution for ZnMxSb1-x significantly enhances the power factor, which indicates that Sn is effective dopant for ZnSb.
9 citations
TL;DR: In this paper, the authors measured electrical conductivity, Seebeck coefficient, and thermal conductivity of nonstoichiometric ternary thermoelectric materials Ag0.84Sb1.15M0.01Te2.16 (M=Ce, Yb, Cu) by a direct melt-quench and hot press process.
Abstract: Nonstoichiometric ternary thermoelectric materials Ag0.84Sb1.15M0.01Te2.16 (M=Ce, Yb, Cu) were prepared by a direct melt-quench and hot press process. The carrier concentration of all the samples increased after doping. Thermoelectric properties, namely electrical conductivity, Seebeck coefficient, and thermal conductivity, were measured from 300 to 673 K. The phase transition occurring at about 418 K representing the phase transition from β-Ag2Te to α-Ag2Te influenced the electrical transport properties. The electrical conductivities of Ce and Yb doped samples increased after doping from 1.9×104 to 2.5×104 and 2.3×104 S·m−1, respectively, at 673 K. Also, at room temperature, the Seebeck coefficient of the Ce doped sample relatively increased corresponding to the high carrier concentration due to the changes in the band structure. However, all the thermal conductivities increased after doping at low temperature. Because of the higher thermal conductivity, the dimensionless figure of merit ZT of these doped samples has not been improved.
9 citations
TL;DR: In this paper, the Nernst and the Seebeck coefficient in Te-doped Bi 95 Sb 5 and Bi 88 Sb 12 alloys were investigated between 77°K and 300°K.
Abstract: The Nernst and the Seebeck effects in Te-doped Bi 95 Sb 5 and Bi 88 Sb 12 alloy were investigated between 77°K and 300°K. N -type extrinsic behavior was observed for Te-doped (>10 18 cm −3 ) Bi Sb alloys in the measuring temperature range. Measurements of the Seebeck coefficient and the Magneto-Seebeck effect in these alloys yield the Fermi energy and the scattering mechanisms. Electron mobility deduced from measurements of the Nernst coefficient in these alloys, assuming acoustic mode lattice scattering, is found in good agreement with the results from the Hall effect and the magneto resistance measurements.
9 citations