Fig. 2
From: Complex electronic structure and compositing effect in high performance thermoelectric BiCuSeO
Electrical transport properties of Bi1 − xPbxCuSeO (x = 0–0.2). a Carrier concentration p and Hall mobility μΗ at room temperature. b Calculated Fermi energy (EF) based on experimental p and the calculated density of states (DOS). Temperature dependences of c p and d μΗ (300–650 K). e Power factor (PF) and f dimensionless figure of merit (ZT) as a function of the nominal Pb content. Three maxima are marked as shaded areas for PF and ZT. The uncertainties of the Seebeck coefficient and the electrical conductivity measurements are ~3% and ~5%, respectively, giving rise to a PF error of ~10%. Combined with ~10% uncertainty in the thermal conductivity measurement, the measurement error of ZT is estimated to be ~20%
