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6 papers
Carrier scattering considerations and thermoelectric power factors of half-Heuslers
Rajeev Dutt, Bhawna Sahni, Yao Zhao +7
The electronic and thermoelectric (TE) transport properties of 13 n-type and p-type half-Heusler alloys are computationally examined using Boltzmann transport. The electronic scatt…
Thermoelectric transport and the role of different scattering processes in the half-Heusler NbFeSb
Bhawna Sahni, Yao Zhao, Zhen Li +3
We perform an ab initio computational investigation of the electronic and thermoelectric transport properties of one of the best performance half-Heusler (HH) alloys, NbFeSb. We us…
Asymmetric Electronic Band Alignment and Potentially Enhanced Thermoelectric Properties in Phase-Separated Mg2X (X=Si,Ge,Sn) Alloys
Byungki Ryu, Samuel Foster, Eun-Ae Choi +8
The Mg2X (X=Si, Ge, Sn) based alloy is an eco-friendly thermoelectric material for mid-temperature applications. The Mg2Si1-xSnx and Mg2Ge1-xSnx alloys can be phase-separated into…
Conditions for thermoelectric power factor improvements upon band alignment in complex bandstructure materials
Saff E Awal Akhtar, Neophytos Neophytou
Band alignment (or band convergence) is a strategy suggested to provide improvements in the thermoelectric power factor (PF) of materials with complex bandstructures. The addition…
Theory of Quasi-Statically Screened Electron-Polar Optical Phonon Scattering
Yuji Go, Rajeev Dutt, Neophytos Neophytou
The scattering of electrons with polar optical phonons (POP) is an important mechanism that limits electronic transport and determines electron mobility in polar materials. This is…
Materials design criteria for ultra-high thermoelectric power factors in metals
Patrizio Graziosi, Kim-Isabelle Mehnert, Rajeev Dutt +2
Metals have high electronic conductivities, but very low Seebeck coefficients, which traditionally make them unsuitable for thermoelectric materials. Recent studies, however, showe…