J. Mater. Sci. Technol. ›› 2013, Vol. 29 ›› Issue (3): 231-236.DOI: 10.1016/j.jmst.2012.12.011

Special Issue: 光电材料专辑

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Preparation and Characterization of Flower-like Cu2SnS3 Nanostructures by Solvothermal Route

Xiaojuan Liang1), Qian Cai1), Weidong Xiang1,2), Zhaopin Chen1), Jiasong Zhong2), Yun Wang1) , Mingguo Shao1), Zhenrong Li3)   

  1. 1) College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
    2) College of Materials Science and Engineering, Tongji University, Shanghai 201804, China
    3) College of Light Industry, Liaoning University, Shenyang 110036, China
  • Received:2012-01-18 Revised:2012-11-16 Online:2013-03-30 Published:2013-03-19
  • Contact: Weidong Xiang
  • Supported by:

    National Natural Science Foundation of China (Grant Nos. 50972107 and 51272059), the Key Scientific and Tech­nological Innovation Teams of Zhejiang Province, China (No. 2009R50010), the Natural Science Foundation of Liaoning Province, China (No. 201202087) and Program of Science and Technology Project of Wenzhou, China (No. G20110012).

Abstract:

Flower-like Cu2SnS3 nanostructures composed of nano-flakes were successfully synthesized by solvothermal technique at 180 oC for 16 h. In the preparation process, CuCl2·2H2O, SnCl2·2H2O and thiourea were used as raw materials, and ethylene glycol were used as solvent. The results showed that the obtained product was pure phase Cu2SnS3. The average diameter of Cu2SnS3 flowers and the thickness of the nano-flakes were about 1e1.5 mm and 10 nm, respectively. The influence of reaction time and solvents on the morphology, size and structure of the products was investigated by powder X-ray diffraction and field-emission scan electron microscopy (FESEM). The ultraviolet-visible absorption spectrum measurement indicated that the band gap of the sample was about 1.26 eV and could be applied to the absorbing layer of thin solar cell. The possible formation mechanism of flower-like Cu2SnS3 was also proposed and discussed.

Key words: Cu2SnS3 nanostructures, Solvothermal, Semiconductor materials, Formation process