Fig. 4: Performance of the Te-free segmented modules.
From: Towards tellurium-free thermoelectric modules for power generation from low-grade heat

Comparison of the measured conversion efficiency (ηmax, lines with symbols) among the Te-free modules in this work under a series of temperature difference (ΔT). The ηmax of the Bi2Te3-based modules from the literature (dashed lines) were also plotted for comparison8,9,33,34,35. The inset shows the photograph of a segmented Te-free module. The error bars represent the measurement uncertainties from the commercial device.