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Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (23): 2870-2876.DOI: 10.6023/A1106213 Previous Articles     Next Articles

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CuInS2纳米晶的结构、形貌与光学性能研究

冯丽1, 梁晓娟1, 杨帆1, 钟家松2, 王芸1, 向卫东*,1,2   

  1. (1温州大学化学与材料工程学院 温州 325035)
    (2同济大学材料科学与工程学院 上海 200092)
  • 投稿日期:2011-06-21 修回日期:2011-08-05 发布日期:2011-08-15
  • 通讯作者: 向卫东 E-mail:xiangweidong001@126.com
  • 基金资助:

    国家自然科学基金项目；浙江省重点科技创新团队项目；浙江省自然科学基金重点基金项目；温州市科技局计划项目

Structure, Morphology and Optical Properties of CuInS2 Nanocrystals

Feng Li1; Liang Xiaojuan1; Yang Fan1; Zhong Jiasong2; Wang Yun1 Xiang, Weidong*,1,2   

  1. (1 College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035)
    (2 College of Materials Science and Engineering, Tongji University, Shanghai 200092)
  • Received:2011-06-21 Revised:2011-08-05 Published:2011-08-15
  • Contact: weidong xiang E-mail:xiangweidong001@126.com
  • Supported by:

    National Nature Science Foundation of China； Key Scientific and Technological Innovations Team of Zhejinag Province；Key Foundation of Zhejinag Province Nature Science Foundation；Science and technology project of wenzhou city

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Cu-In-S nanocrystals (CIS NCs) were prepared by thermolysis of a mixed solution of copper(II) acetylacetonate [Cu(acac)2], indium stearate [In(St)3], and dodecanethiol (DDT) in noncoordinating solvent 1-octadecene (ODE) at 250 ℃ for 50 min. The diameter of rod-like CuInS2 nanocrystals was about 2 nm, and the length of 70 nm. The microstructure of CIS NCs was determined to be of the tetragonal phase. The microstructure, morphology, and phase constituents of the CIS NCs were examined using diverse techniques including X-ray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS). The third-order optical nonlinearities of rod-like CIS NCs in n-hexane were studied by Z-scan technique at a wavelength of 770 nm. The results showed that the third-order optical nonlinear refractive index γ, absorption coefficient β, and susceptibility χ(3) were determined to be 1.76×10－17 m2/W, 7.95×10－11 m/W, and 8.60×10－12 esu, respectively.

Key words: CuInS2, nanorod, Cu(acac)2, third-order optical nonlinear, Z-Scan