Abstract
Thermoelectricity in oxides, especially NaxCoO2 and related materials, is discussed from the point of view of first principles calculations and Boltzmann transport theory. The electronic structure of this material is exceptional in that it has a combination of very narrow bands and strong hybridization between metal d states and ligand p states. As shown within the framework of conventional Boltzmann transport theory, this leads to high Seebeck coefficients even at metallic carrier densities. This suggests a strategy of searching for other narrow band oxides that can be doped metallic with mobile carriers. Some possible avenues for finding such materials are suggested.
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Singh, D.J. Oxide Thermoelectrics. MRS Online Proceedings Library 1044, 205 (2007). https://doi.org/10.1557/PROC-1044-U02-05
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DOI: https://doi.org/10.1557/PROC-1044-U02-05