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We analyze the efficiency in terms of a thermoelectric system of a one-dimensional Silicon-Germanium alloy. The dependency of thermal conductivity on the stoichiometry is pointed out, and the best fit of the experimental data is determined by a nonlinear regression method (NLRM). The thermoelectric efficiency of that system as function of the composition and of the effective temperature gradient is calculated as well. For three different temperatures (T=300&amp;nbsp;K, T=400&amp;nbsp;K, T=500&amp;nbsp;K), we determine the values of composition and thermal conductivity corresponding to the optimal thermoelectric energy conversion. The relationship of our approach with Finite-Time Thermodynamics is pointed out.

Thermoelectric Efficiency of Silicon–Germanium Alloys in Finite-Time Thermodynamics