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Issue 1, 2017
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Ultrathin few layer oxychalcogenide BiCuSeO nanosheets

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Layered materials with intrinsically low thermal conductivity are promising candidates for thermoelectric waste heat to electrical energy conversion. Recently bulk form BiCuSeO, a layered oxychalcogenide, has drawn attention for thermoelectric applications. However, synthesis of a two dimensional nanosheet of BiCuSeO and study of its thermoelectric properties have not been explored yet. Here, we present a facile surfactant free low temperature solvothermal synthesis of few layered ultrathin BiCuSeO nanosheets for the first time. Nanosheets of BiCuSeO exhibit a semiconducting band gap of 0.9 eV and p-type conduction. A dense hot pressed pellet of BiCuSeO nanosheets exhibits a superior power factor and lower lattice thermal conductivity compared to that of the bulk sample in the temperature range of 300–723 K.

Graphical abstract: Ultrathin few layer oxychalcogenide BiCuSeO nanosheets

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Publication details

The article was received on 17 Oct 2016, accepted on 29 Oct 2016 and first published on 01 Nov 2016

Article type: Research Article
DOI: 10.1039/C6QI00435K
Inorg. Chem. Front., 2017,4, 84-90

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    Ultrathin few layer oxychalcogenide BiCuSeO nanosheets

    M. Samanta, S. N. Guin and K. Biswas, Inorg. Chem. Front., 2017, 4, 84
    DOI: 10.1039/C6QI00435K

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