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Acta Chimica Sinica >

2012 , Vol. 70 >Issue 05: 572 - 578

DOI: https://doi.org/10.6023/A1106122

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

  • Li Qiang ,
  • Gu Min ,
  • Du Yungui ,
  • Xian Xiaodong
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  • 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 date: 2011-06-12

  Revised date: 2011-10-10

  Online 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).

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Abstract

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

Cite this article

Li Qiang , Gu Min , Du Yungui , Xian Xiaodong . TeO2-SiO2/α-TeO2 Composite Film Prepared by Electrochemical sol-gel Method and Its Non-linear Optical Properties[J]. Acta Chimica Sinica, 2012 , 70(05) : 572 -578 . DOI: 10.6023/A1106122

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