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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The demand for green energy increases day by day due to environmental concernand thermoelectric (TE) materials are one of the eco-friendly energy resources.Few authors reported high TE performance in TmCu$_3$Ch$_4$, reaching the figureof merit (ZT) above 2 at 1000K, from first-principles calculations neglectingelectron-phonon scattering, spin-orbit coupling effect (SOC), andenergy-dependent carrier lifetime. Here, thermoelectric transport properties ofTmCu$_3$Ch$_4$ are reinvestigated through considering these parameters, andsignificant discrepancies are found. The ZT of p-type TaCu$_3$Te$_4$ can reach~3 at 1000K among these compounds due to its low lattice thermal conductivity($\kappa_l$) (0.38 W m-1 K-1). Interestingly, the value of $\kappa_l$ isreduced to 0.17 W m-1 K-1 through 1 GPa pressure while the power factor isslightly improved due to bandgap reduction, leading to an extraordinary ZT~5.5at 1000K. Although the substitution of Se causes a slight reduction of$\kappa_l$ to ~0.3 W m-1 K-1, the power factor is reduced significantly due tothe dramatic reduction of DOS near Fermi level, which leads to lower theSeebeck coefficient largely and increase electrical conductivity slightly.

Effect of electron-phonon scattering, pressure and alloying on the thermoelectric performance of TmCu$_3$Ch$_4$ (Tm=V, Nb, Ta; Ch=S, Se, Te)