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

Jiang, Qinghui, Yan, Haixue, Khaliq, Jibran, Shen, Yang, Simpson, Kevin and Reece, Michael (2014) Enhancement of thermoelectric properties by atomic-scale percolation in digenite CuxS. Journal of Material Chemistry A, 2. pp. 9486-9489. ISSN 2050-7488

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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.

Item Type:	Article
Subjects:	F100 Chemistry F200 Materials Science F300 Physics H800 Chemical, Process and Energy Engineering J300 Ceramics and Glasses
Department:	Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User:	Dr Jibran Khaliq
Date Deposited:	25 Sep 2017 14:17
Last Modified:	12 Oct 2019 20:41
URI:	http://nrl.northumbria.ac.uk/id/eprint/31951

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