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

The search for thermoelectrics with higher figures of merit (ZT) will neverstop due to the demand of heat harvesting. Single layer transition metaldichalcogenides (TMD), namely MX2 (where M is a transition metal and X is achalcogen) that have electronic band gaps are among the new materials that havebeen the focus of such research. Here, we investigate the thermoelectrictransport properties of hybrid armchair-edged TMDs nanoribbons, by using thenonequilibrium Green's function technique combined with the first principlesand molecular dynamics methods. We find a ZT as high as 7.4 in hybridMoS2/MoSe2 nanoribbons at 800K, creating a new record for ZT. Moreover, thehybrid interfaces by substituting X atoms are more efficient than those bysubstituting M atoms to tune the ZT. The origin of such a high ZT of hybridnanoribbons is the high density of the grain boundaries: the hybrid interfacesdecrease thermal conductance drastically without a large penalty to electronicconductance.

New record of high ZT found in hybrid transition-metal-dichalcogenides