Acta Chimica Sinica ›› 2012, Vol. 70 ›› Issue (07): 903-910 .DOI: 10.6023/A1109032 Previous Articles     Next Articles

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Cu2ZnSnS4 纳米晶的制备及其三阶非线性光学性能的研究

王芸a, 梁晓娟a, 蔡倩a, 冯丽a, 邵明国a, 钟家松b, 向卫东a,b   

  1. a 温州大学化学与材料工程学院 温州 325035;
    b 同济大学材料科学与工程学院 上海 201804
  • 投稿日期:2011-09-03 修回日期:2011-12-25 发布日期:2012-04-23
  • 通讯作者: 梁晓娟, 向卫东 E-mail:xiangweidong001@126.com
  • 基金资助:

    国家自然科学基金(Nos. 50772075, 50972107)和浙江省科技创新团队项目(No. 2009R50010).

Synthesis of Cu2ZnSnS4 Nanocrystals and Its Third-order Nonlinear Optical Properties

Wang Yuna, Liang Xiaojuana, Cai Qiana, Feng Lia, Shao Mingguoa, Zhong Jiasongb, Xiang Weidonga,b   

  1. a College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035 China;
    b College of Materials Science and Engineering, Tongji University, Shanghai 201804 China
  • Received:2011-09-03 Revised:2011-12-25 Published:2012-04-23
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos. 50772075, 50972107) and Zhejiang Province Key Scientific and Technological Innovations Team of China (No. 2009R50010).

Monodisperse Cu2ZnSnS4 (CZTS) nanocrystals were synthesized by one-pot method using copper( II) acetylacetonate, zinc(II) acetate, tin(II) chloride, S powder and oleylamine as precursors. The composition, structure, morphology and properties of the CZTS were characterized by X-ray diffraction (XRD), energy dispersive X-ray (EDS), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), UV-vis and Z-scan technology. The results showed that the as-prepared CZTS nanocrystals were tetragonal phase with hexagonal shape and particle size about 10 nm. The nonlinear refraction index γ (-1.08×10-15, -9.08×10-17 m2·W-1), nonlinear absorption coefficient β (6.5×10-9, 3.69×10-11 m·W-1) and third-order optical susceptibility χ(3) (1.49× 10-9, 4.35×10-10 esu) of CZTS nanocrystals with different size (10 nm, 13 nm) were calculated. Finally, the growth mechanism of nanocrystals and the nonlinear optical properties were investigated.

Key words: Cu2ZnSnS4, nanocrystals, third-order nonlinear optical