English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Some of the most promising candidates for next generation thermoelectrics arenanocomposites due to their low thermal conductivities that result from phononscattering on the boundaries of the various material phases. However, in orderto maximize the figure of merit ZT, it is important to understand the impact ofsuch features on the thermoelectric power factor. In this work we consider theeffect that nanoinclusions and voids have on the electronic and thermoelectriccoefficients of two dimensional geometries using the fully quantum mechanicalNon Equilibrium Greens Function method. This method combines in a unifiedapproach the details of geometry, electron phonon interactions, quantisation,tunnelling, and the ballistic to diffusive nature of transport. We show that aslong as the barrier height is low nanoinclusions can have a positive impact onthe Seebeck coefficient and the power factor is not severely impacted by areduction in conductance. The power factor is also shown to be approximatelyindependent of nanoinclusion and void density in the ballistic case. On theother hand, in the presence of phonon scattering voids degrade the power factorand their influence increases with density.

Quantum transport simulations for the thermoelectric power factor in two dimensional nanocomposites