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reaches a peak ZT > 1.2 between 479 and 531 K and an average ZT of 1.05 over 300-600 K. A single-leg device exhibits a predicted conversion efficiency of 14.58% at a temperature difference of 464 K. These results demonstrate the effectiveness of combining Y doping with Ta nanophase engineering to simultaneously modulate electron and phonon transport, offering a new strategy for sustainable, high-performance n-type thermoelectrics.
Zhang et al. (Wed,) studied this question.