Article | REF: N1500 V1

Thermoelectric effect materials

Author: Claude GODART

Publication date: June 10, 2009

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1. Theoretical aspects of thermoelectricity

1.1 Thermoelectric effects (TE)

The first thermoelectric effect was discovered by Seebeck in 1822 , but was not understood until much later by Œrsted: a potential difference Δ V appears at the junction of two materials subjected to a temperature difference Δ T.

The best-known use of the Seebeck effect, S ab = Δ V/ΔT, is temperature measurement using thermocouples. The Seebeck coefficient S is the entropy Σ per charge carrier divided by the charge q :

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Theoretical aspects of thermoelectricity