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Quaternary Chalcogenide Nanocrystals: Synthesis of Cu2ZnSnSe4 by Solid State Reaction and their Thermoelectric Properties

Published online by Cambridge University Press:  06 August 2013

Umme Farva  and
Chan Park
Umme Farva
Affiliation:
Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Republic of Korea
Chan Park
Affiliation:
Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Republic of Korea
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Abstract

In this paper, synthesis of Cu2ZnSnSe4 (CZTSe) materials by using simple and cost-effective solid state reaction method from the elemental Cu, ZnO, SnO and elemental Se powders are carried out. The SEM images show spherical, non-uniform size with aggregation of nanopowders. The phase separation and thermal analysis of the milled powders suggested that most of the starting powders reacted because of a mechanical alloying effect during milling process. After the solid state reaction at above 500 °C, the nanopowders crystallized into stannite single phase, which are confirm by XRD spectra. The thermoelectric properties of synthesized powder are under study.

Keywords

annealingcrystallinescanning electron microscopy (SEM)

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