Phase interface engineering enables state-of-the-art half-Heusler thermoelectrics.

ABSTRACT: In thermoelectric, phase interface engineering proves effective in reducing the lattice thermal conductivity via interface scattering and amplifying the density-of-states effective mass by energy filtering. However, the indiscriminate introduction of phase interfaces inevitably leads to diminished carrier mobility. Moreover, relying on a singular energy barrier is insufficient for comprehensive filtration of low-energy carriers throughout the entire temperature range. Addressing these challenges, we advocate the establishment of a composite phase interface using atomic layer deposition (ALD) technology. This design aims to effectively decouple the interrelated thermoelectric parameters in ZrNiSn. The engineered coherent dual-interface energy barriers substantially enhance the density-of-st

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC11252142 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature