Enhancement of thermoelectric properties by atomic-scale percolation in digenite CuxS

Qinghui Jiang, Haixue Yan, Jibran Khaliq, Yang Shen, Kevin Simpson, Michael Reece

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)

Abstract

Atomic-scale percolation phenomena of electric and thermal conductivity were found in digenite CuxS. Copper ions are randomly located between the closely packed sulphur ions and jump to another position via unoccupied interstices. Near the percolation threshold value (fc similar 0.3) in the conductive region{,} a 60% enhancement of ZT value can be obtained. This indicates that the percolation phenomena can provide a new strategy to optimize the properties of thermoelectric materials{,} especially for quasi disordered materials.
Original languageEnglish
Pages (from-to)9486-9489
JournalJournal of Material Chemistry A
Volume2
Early online date17 Apr 2014
DOIs
Publication statusPublished - 7 Jul 2014
Externally publishedYes

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