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Issue 1, 2017

Ultrathin few layer oxychalcogenide BiCuSeO nanosheets

Author affiliations

Abstract

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

Supplementary files

Article information


Submitted
17 Oct 2016
Accepted
29 Oct 2016
First published
01 Nov 2016

Inorg. Chem. Front., 2017,4, 84-90
Article type
Research Article

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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