Acta Chimica Sinica ›› 2012, Vol. 70 ›› Issue (05): 572-578 .DOI: 10.6023/A1106122 Previous Articles     Next Articles

Full Papers

TeO2-SiO2/α-TeO2 复合薄膜的电化学-溶胶凝胶制备及非线性光学性能

李强a, 辜敏a, 杜云贵a, 鲜晓东b   

  1. a 复杂煤气层瓦斯抽采国家与地方联合工程实验室 重庆大学煤矿灾害动力学与控制国家重点实验室 重庆大学资源及环境科学学院 重庆 400044;
    b 重庆大学自动化学院 重庆 400044
  • 投稿日期:2011-06-12 修回日期:2011-10-10 发布日期:2011-11-23
  • 通讯作者: 辜敏
  • 基金资助:

    重庆市科委自然科学基金(No. 2008BC4003)、厦门大学固体表面物理化学国家重点实验室开放课题(No. 200703)资助项目.

TeO2-SiO2/α-TeO2 Composite Film Prepared by Electrochemical sol-gel Method and Its Non-linear Optical Properties

Li Qianga, Gu Mina, Du Yunguia, Xian Xiaodongb   

  1. a State and local Joint Engineering Laboratory of Methane Drainage in Complex Coal Gas Seam, State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, College of Resources and Environmental Science, Chongqing University, Chongqing 400044;
    b College of Automatization, Chongqing University, Chongqing 400044
  • Received:2011-06-12 Revised:2011-10-10 Published:2011-11-23
  • Supported by:

    This work was supported by the Natural Science Foundation Project of CQ CSTC (No. 2008BC4003) and the State Key Laboratory for Physical Chemistry of Solid Surfaces of Xiamen University (No. 200703).

Stable TeO2-SiO2 composite sol was prepared by using tellurium isopropoxide and tetraethoxysilane as precursors. A black composite film was prepared by electrochemical sol-gel method using the as-prepared TeO2-SiO2 composite sol as electrolyte, and then was transferred into a gray and semitransparent composite film by further thermo treatment. Characterized by XRD, TG-DTA and SEM-EDX, the thin composite film was identified to be composed of Si, Te and O elements as the main components, and α-TeO2 particles and a small amount of Te particles were found to be dispersed uniformly in the TeO2-SiO2 gel composite film. The third-order nonlinear optical properties of the film was tested by Z-scan method, revealing that the third-order nonlinear optical susceptibility χ(3) was 2.171×10-14 (m·V-1)2.

Key words: tellurium, TeO2-SiO2, electrochemistry-sol-gel method, film, nonlinear optics