An alternative approach to predict seebeck coefficients: Application to La3-xTe4

Yi Wang, Xiaoyu Chong, Yong Jie Hu, Shunli Shang, Fivos R. Drymiotis, Samad A. Firdosy, Kurt E. Star, Jean Pierre Fleurial, Vilupanur A. Ravi, Long Qing Chen, Zi Kui Liu

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

A thermodynamic understanding of Seebeck coefficient was demonstrated in terms of electrochemical potential. It divided the contributions to the Seebeck coefficient into two contributions: the effect of thermal electronic excitations due to Fermi distribution and the effect of charge carrier gradient due to thermal expansion. The procedure is illustrated within the rigid band approximation in terms of the electronic density-of-states and the quasiharmonic approximation in terms of the phonon density-of-states. Numerical results were given using the n-type high temperature thermoelectric material La3-xTe4 at x = 0, 0.25, and 0.33 as the prototype at a variety of carrier concentrations.

Original languageEnglish (US)
Title of host publicationZentropy
Subtitle of host publicationTools, Modelling, and Applications
PublisherJenny Stanford Publishing
Pages233-245
Number of pages13
ISBN (Electronic)9781040118566
ISBN (Print)9789815129441
StatePublished - Aug 23 2024

All Science Journal Classification (ASJC) codes

  • General Engineering
  • General Physics and Astronomy
  • General Chemistry
  • General Agricultural and Biological Sciences
  • General Biochemistry, Genetics and Molecular Biology
  • General Medicine
  • General Chemical Engineering

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