Interstitial Defect Modulation Promotes Thermoelectric Properties of p‐Type HfNiSn
Xin Ai,
Wenhua Xue,
Lars Giebeler
et al.
Abstract:The n‐type MNiSn (M = Ti, Zr, or Hf) half‐Heusler compounds are reported as promising medium‐ and high‐temperature thermoelectric materials; however, their p‐type counterparts have suffered from poor performance due to the in‐gap state caused by Ni occupying the tetrahedral interstitials. Inspired by recent findings that thermoelectric performance can be enhanced without substantially increasing compositional or structural complexity, the study attempts to manipulate the Ni interstitial defects by altering the… Show more
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