Synthesis and properties of colloidal Cu2CdSnS4 nanocrystals
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Shanghai Institute of Technical Physics,CAS,Shanghai Institute of Technical Physics,CAS,Shanghai Institute of Technical Physics,CAS,Shanghai Institute of Technical Physics,CAS,Shanghai Institute of Technical Physics,CAS,Shanghai Institute of Technical Physics,CAS

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    Abstract:

    Colloidal Cu2CdSnS4 nanocrystals were synthesized by a facile solution chemistry method. Transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and UV-vis-NIR absorbance spectroscopy measurements indicated that the Cu2CdSnS4 colloidal nanocrystals have uniform size-distribution and good crystalline quality with a tetrahedral coordinated structure. The stoichiometric ratio Cu/Cd/Sn/S is about 2.07:0.75:1.26:3.92 in Cu2CdSnS4 nanocrystals, and the chemical states of Cu, Cd, Sn and S elements are of +1, +2, +4 and -2, which correspond with the states in the molecular formula of Cu2CdSnS4. The band gap of Cu2CdSnS4 nanocrystals is estimated to be ~1.3 eV by extrapolating method.

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LIU Yu-Feng, GE Mei-Ying, LUO Hai-Han, SUN Yan, WU Jie, DAI Ning. Synthesis and properties of colloidal Cu2CdSnS4 nanocrystals[J]. Journal of Infrared and Millimeter Waves,2012,31(1):1~4

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History
  • Received:March 08,2011
  • Revised:April 07,2011
  • Adopted:April 10,2011
  • Online: February 28,2012
  • Published: