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Realizing p-type NbCoSn half-Heusler compounds with enhanced thermoelectric performance via Sc substitution
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Realizing p-type NbCoSn half-Heusler compounds with enhanced thermoelectric performance via Sc substitution
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Journal Article
Realizing p-type NbCoSn half-Heusler compounds with enhanced thermoelectric performance via Sc substitution
2020
Overview
N-type half-Heusler NbCoSn is a promising thermoelectric material due to favourable electronic properties. It has attracted much attention for thermoelectric applications while the desired p-type NbCoSn counterpart shows poor thermoelectric performance. In this work, p-type NbCoSn has been obtained using Sc substitution at the Nb site, and their thermoelectric properties were investigated. Of all samples, Nb
0.95
Sc
0.05
CoSn compound shows a maximum power factor of 0.54 mW/mK
2
which is the highest among the previously reported values of p-type NbCoSn. With the suppression of thermal conductivity, p-type Nb
0.95
Sc
0.05
CoSn compound shows the highest measured figure of merit ZT = 0.13 at 879 K.
Publisher
Taylor & Francis,Taylor & Francis Ltd,Taylor & Francis Group
Subject
