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Issue 25, 2014
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Enhancement of thermoelectric properties by atomic-scale percolation in digenite CuxS

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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 ∼ 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.

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

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Publication details

The article was received on 13 Mar 2014, accepted on 17 Apr 2014 and first published on 17 Apr 2014


Article type: Communication
DOI: 10.1039/C4TA01250J
Author version available: Download Author version (PDF)
Citation: J. Mater. Chem. A, 2014,2, 9486-9489
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    Enhancement of thermoelectric properties by atomic-scale percolation in digenite CuxS

    Q. Jiang, H. Yan, J. Khaliq, Y. Shen, K. Simpson and M. J. Reece, J. Mater. Chem. A, 2014, 2, 9486
    DOI: 10.1039/C4TA01250J

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