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  Ritscher, A.; Just, J.; Dolotko, O.; Schorr, S.; Lerch, M.: A mechanochemical route to single phase Cu₂ZnSnS₄ powder. Journal of Alloys and Compounds 670 (2016), p. 289-296

10.1016/j.jallcom.2016.02.058
Open Access Version

Abstract:
With respect to absorber materials in solar cells, Cu2ZnSnS4 (CZTS) has been a focus of interest in recent years. In this work, a new route leading to single phase CZTS powders is presented. For structural characterization X-ray and neutron powder diffraction measurements were performed. Further structural and compositional analysis of the CZTS powder was carried out by means of X-ray absorption near edge spectroscopy (XANES) and wavelength-dispersive X-ray spectroscopy (WDS). The obtained CZTS powder with an actual composition of Cu2.00(4)Zn1.02(2)Sn0.99(2)S4.00(8) adopts the kesterite-type structure. A detailed cation distribution analysis using the average neutron scattering length method revealed a partial disorder of copper and zinc on the (2c) and (2d) sites.