Tackling Challenges in Seebeck Coefficient Measurement of Ultra-High Resistance Samples with an AC Technique [PDF]
, 2019 Seebeck coefficient is a widely-studied semiconductor property. Conventional Seebeck coefficient measurements are based on DC voltage measurement. Normally this is performed on samples with low resistances below a few Mohm level. Meanwhile, certain semiconductors are highly intrinsic and resistive, many examples can be found in optical and photovoltaic
Pan, Z +5 more
arxiv +7 more sources
Thermoelectric response across the semiconductor-semimetal transition in black phosphorus [PDF]
Physical Review Research, 2023 By precisely tuning the ground state of black phosphorus with pressure from the semiconducting to semimetallic state, we track a systematic evolution of the Seebeck coefficient.
Yuna Nakajima +2 more
doaj +2 more sources
Determination of Seebeck coefficient originating from phonon-drag effect using Si single crystals at different carrier densities [PDF]
Scientific Reports, 2023 The phonon-drag effect is useful for improving the thermoelectric performance, especially the Seebeck coefficient. Therefore, the phonon and electron transport properties of Si single crystals at different carrier densities were investigated, and the ...
Masataka Hase +5 more
doaj +2 more sources
Experimental evidence of a size-dependent sign change of the Seebeck coefficient of Bi nanowire arrays [PDF]
Scientific Reports, 2023 The electrical transport in bismuth nanowires is strongly influenced by both sample geometry and crystallinity. Compared to bulk bismuth, the electrical transport in nanowires is dominated by size effects and influenced by surface states, which gain ...
Michael Florian Peter Wagner +7 more
doaj +2 more sources
Effect of Nanographene Coating on the Seebeck Coefficient of Mesoporous Silicon [PDF]
Nanomaterials, 2023 Nanographene–mesoporous silicon (G-PSi) composites have recently emerged as a promising class of nanomaterials with tuneable physical properties. In this study, we investigated the impact of nanographene coating on the Seebeck coefficient of mesoporous ...
Sibel Nar +6 more
doaj +2 more sources
Nernst and Seebeck effect in a graphene nanoribbon [PDF]
Phys. Rev. B, v80, p235411 (2009), 2010 The thermoelectric power, including the Nernst and Seebeck effects, in graphene nanoribbon is studied. By using the non-equilibrium Green function combining with the tight-binding Hamiltonian, the Nernst and Seebeck coefficients are obtained. Due to the electron-hole symmetry, the Nernst coefficient is an even function of the Fermi energy while the ...
A. A. Abrikosov +6 more
arxiv +5 more sources
Seebeck coefficient of thermoelectric moleculat junction: First-principles calculations [PDF]
Phys. Rev B 79, 193101 (2009), 2008 A first-principles approach is presented for the thermoelectricity in molecular junctions formed by a single molecule contact. The study investigates the Seebeck coefficient considering the source-drain electrodes with distinct temperatures and chemical potentials in a three-terminal geometry junction.
Chen, Yu-Chang, Liu, Yu-Shen
arxiv +3 more sources
High thermoelectric figure of merit by resonant dopant in half-Heusler alloys
AIP Advances, 2017 Half-Heusler alloys have been one of the benchmark high temperature thermoelectric materials owing to their thermal stability and promising figure of merit ZT. Simonson et al. early showed that small amounts of vanadium doped in Hf0.75Zr0.25NiSn enhanced
Long Chen +4 more
doaj +3 more sources
Effect of phonon-boundary scattering on phonon-drag factor in Seebeck coefficient of Si wire [PDF]
AIP Advances, 2020 For highly efficient thermoelectric devices with Si nanostructures, we have fabricated and characterized micro/nanometer-scaled Si wires preserving the phonon-drag effect in order to observe the impact of phonon-boundary scattering on the phonon-drag ...
K. Fauziah +6 more
doaj +2 more sources
Charge carrier density, mobility, and Seebeck coefficient of melt-grown bulk ZnGa2O4 single crystals [PDF]
AIP Advances, 2020 The temperature dependence of the charge carrier density, mobility, and Seebeck coefficient of melt-grown, bulk ZnGa2O4 single crystals was measured between 10 K and 310 K.
Johannes Boy +4 more
doaj +2 more sources