Issue 15, 2016

High thermoelectric performance of tellurium doped paracostibite

Abstract

Paracostibite (CoSbS) has recently been identified as a promising thermoelectric (TE) material, yet its full potential remains to be attained. We present herein an integrated method based on high throughput DFT computations validated with experiments that has allowed us to identify tellurium on antimony sites as a much more effective dopant than the formerly used nickel on cobalt sites. By carrying out a systematic adjustment optimization of the experimental parameters, we achieve a power factor as high as 2.7 mW m−1 K−2 at 543 K, which is maintained up to 730 K. This is, to the best of our knowledge, the largest value reported for polycrystalline metal sulfides.

Graphical abstract: High thermoelectric performance of tellurium doped paracostibite

Supplementary files

Article information

Article type
Communication
Submitted
27 Jan 2016
Accepted
08 Feb 2016
First published
10 Feb 2016

J. Mater. Chem. C, 2016,4, 3094-3100

Author version available

High thermoelectric performance of tellurium doped paracostibite

R. Chmielowski, S. Bhattacharya, W. Xie, D. Péré, S. Jacob, R. Stern, K. Moriya, A. Weidenkaff, G. K. H. Madsen and G. Dennler, J. Mater. Chem. C, 2016, 4, 3094 DOI: 10.1039/C6TC00410E

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