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Colloidal Cu2ZnSnS4 nanocrystals generated by a facile route using ethylxanthate molecular precursors

Authors

  • Yufeng Liu,

    1. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, P.R. China
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  • Meiying Ge,

    1. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, P.R. China
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  • Yang Yue,

    1. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, P.R. China
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  • Yan Sun,

    1. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, P.R. China
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  • Yizheng Wu,

    1. Department of Physics, State Key Laboratory of Surface Physics, and Advanced Materials Laboratory, Fudan University, Shanghai 200433, P.R. China
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  • Xin Chen,

    Corresponding author
    1. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, P.R. China
    • National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, P.R. China
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  • Ning Dai

    1. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, P.R. China
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Abstract

We have demonstrated a flexible method for preparing Cu2ZnSnS4 (CZTS) nanocrystals by use of zinc ethylxanthate (Zn(ex)2) and copper ethylxanthate (Cu(ex)2). TEM, SEM, XRD, UV–vis, EDS, XPS and TG-DTA indicate that the CZTS nanocrystals have been successfully synthesized. As air-stable molecular precursors, Zn(ex)2 and Cu(ex)2 can optimize the synthesis of quaternary CZTS nanocrystals because Cu(ex)2 and Zn(ex)2 facilitate the formation of homogeneous precursor solutions including all precursors and then for the flexible production of CZTS nanocrystals in homogeneous reaction solutions. (© 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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