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

Thermoelectric power generation has been recognized as one of the mostimportant technologies, and high-performance thermoelectric materials have longbeen pursued. However, because of the large number of candidate materials, thisquest is extremely challenging, and it has become clear that a firm theoreticalconcept from the viewpoint of band-structure engineering is needed. In thisstudy, we theoretically demonstrate that pnictogen-dichalcogenide layeredcompounds, which originally attracted attention as a family of superconductorsand have recently been investigated as thermoelectric materials, can exhibitvery high thermoelectric performance with elemental substitution. Inparticular, we clarify a promising guiding principle for materials design andfind that LaOAsSe$_2$, a material that has yet to be synthesized, has apowerfactor that is six times as large as that of the known compound LaOBiS$_2$and can exhibit a very large $ZT$ under some plausible assumptions. This largeenhancement of the thermoelectric performance originates from thequasi-one-dimensional gapped Dirac-like band dispersion, which is realized bythe square-lattice network. Our study offers one ideal limit of the bandstructure for thermoelectric materials. Because our target materials have highcontrollability of constituent elements and feasibility of carrier doping,experimental studies along this line are strongly awaited.

physical review applied

Prediction of the High Thermoelectric Performance of Pnictogen  Dichalcogenide Layered Compounds with Quasi-One-Dimensional Gapped Dirac-like  Band Dispersion