Synthesis of Quaternary Chalcogenide Nanocrystals: Stannite Cu2ZnxSnySe1+x+2y
Journal of the American Chemical Society2010Vol. 132(13), pp. 4514–4515
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Abstract
A successful synthesis of Cu(2)Zn(x)Sn(y)Se(1+x+2y) (CZTSe) nanoparticles is presented. Nearly monodisperse and highly faceted CZTSe nanoparticles were prepared through reaction of metal amino complexes with saturated solutions of selenium in trioctylphosphine at high temperature. High-resolution transmission electron microscopy and X-ray diffraction analysis showed the prepared nanocrystals to have the tetragonal Cu(2)ZnSnSe(4) crystallographic structure. Nanoscale-resolved electron energy loss spectroscopy images showed the presence of the four elements in each individual nanocrystal. Further analyses of the particles' chemical composition showed the nanocrystals to be consistently Zn- and Sn-poor.
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