Ontology highlight
ABSTRACT:
SUBMITTER: Chen Z
PROVIDER: S-EPMC5216132 | biostudies-other | 2017 Jan
REPOSITORIES: biostudies-other
Nature communications 20170104
To minimize the lattice thermal conductivity in thermoelectrics, strategies typically focus on the scattering of low-frequency phonons by interfaces and high-frequency phonons by point defects. In addition, scattering of mid-frequency phonons by dense dislocations, localized at the grain boundaries, has been shown to reduce the lattice thermal conductivity and improve the thermoelectric performance. Here we propose a vacancy engineering strategy to create dense dislocations in the grains. In Pb< ...[more]