Fig. 3: Phonon transport properties and figure of merit ZT value.
From: Exceptional figure of merit achieved in boron-dispersed GeTe-based thermoelectric composites
Temperature dependence of a total thermal conductivity and b lattice thermal conductivity of Bi0.05Ge0.94Te-y wt. % B samples. c The comparison of the B0/BGT and B10/BGT samples in the lattice thermal conductivity, sound velocity and mean free path of phonons. d ZT values of Bi0.05Ge0.94Te-y wt. % B samples. Comparison of e the maximum ZT value and f the average ZT value of GeTe-based materials in this work with lead-free TE materials20,23,48,58,59,73,74,75 and Pb-doped TE materials25,42,76,77.
