The Seebeck coefficient and phonon drag in silicon
Abstract
We present a theory of the phonon-drag Seebeck coefficient in nondegenerate semiconductors, and apply it to silicon for temperatures 30 < T < 300 K. Our calculation uses only parameters from the literature, and previous calculations of the phonon lifetime. We find excellent agreement with the measurements of Geballe and Hull [Phys. Rev. 98, 940 (1955)]. The phonon-drag term dominates at low temperature, and shows an important dependence on the dimensions of the experimental sample.
- Publication:
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Journal of Applied Physics
- Pub Date:
- December 2014
- DOI:
- Bibcode:
- 2014JAP...116x5102M