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2012 , Vol. 70 >Issue 07: 903 - 910

DOI: https://doi.org/10.6023/A1109032

研究论文

Cu2ZnSnS4 纳米晶的制备及其三阶非线性光学性能的研究

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

收稿日期: 2011-09-03

  修回日期: 2011-12-25

  网络出版日期: 2012-04-23

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).

收起

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

  • Wang Yun ,
  • Liang Xiaojuan ,
  • Cai Qian ,
  • Feng Li ,
  • Shao Mingguo ,
  • Zhong Jiasong ,
  • Xiang Weidong
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  • 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 date: 2011-09-03

  Revised date: 2011-12-25

  Online 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).

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摘要

以乙酰丙酮铜、醋酸锌、二氯亚锡、油胺和硫粉为前驱体, 采用one-pot 法合成出了单分散的Cu2ZnSnS4 (CZTS)纳米晶. 所得样品采用X 射线粉末衍射仪(XRD), 能量色散谱仪(EDS), 透射电子显微镜(TEM), 高分辨透射电子显微镜(HRTEM), 光电子能谱仪(XPS), 紫外-可见光谱仪(UV-vis)和Z-扫描(Z-scan)技术对其结构组成、形貌、性能等进行了表征. 结果表明: 所获得的产物为四方相结构的六边形CZTS 纳米颗粒, 直径约为10 nm. 计算出尺寸大小为10 nm,13 nm 的纳米晶的三阶非线性光学折射率γ (-1.08×10-15, -9.08×10-17 m2·W-1), 三阶非线性光学吸收系数β (6.5×10-9, 3.69×10-11 m·W-1)以及三阶非线性光学极化率χ(3) (1.49×10-9, 4.35×10-10 esu). 并探讨了CZTS 纳米晶可能的形成机理, 及引起三阶光学非线性发生变化的原因.

关键词： 铜锌锡硫; 纳米晶; 三阶非线性光学

本文引用格式

王芸 , 梁晓娟 , 蔡倩 , 冯丽 , 邵明国 , 钟家松 , 向卫东 . Cu2ZnSnS4 纳米晶的制备及其三阶非线性光学性能的研究[J]. 化学学报, 2012 , 70(07) : 903 -910 . DOI: 10.6023/A1109032

Abstract

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

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