CRCU

Chemical Research in Chinese Universities ›› 2012, Vol. 28 ›› Issue (3): 483-487.

• Articles • Previous Articles     Next Articles

UV-Enhanced Room Temperature Ozone Sensor Based on Hierarchical SnO2-In2O3

SUN Jian-bo1, XU Jing1, WANG Biao2, SUN Peng1, LIU Feng-min1, LU Ge-yu1   

  1. 1. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, P. R. China;
    2. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, P. R. China
  • Received:2011-12-19 Revised:2012-01-30 Online:2012-05-25 Published:2012-05-03
  • Contact: LIU Feng-min E-mail:liufm@jlu.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos.60906036, 61074172, 61134010) and the Program for Changjiang Scholars and Innovative Research Team in Universities of China(No.IRT1017).

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Abstract: SnO2-In2O3 hierarchical microspheres were prepared by the hydrothermal and solvothermal method. The morphology, phase crystallinity of the obtained SnO2-In2O3 were measured by X-ray diffraction(XRD), scan electron microscopy(SEM), respectively. A room temperature ozone sensor based on SnO2-In2O3 hierarchical microspheres was fabricated and investigated. The gas sensing properties of the sensor using SnO2-In2O3 strongly depended on the proportion of SnO2 and In2O3. The sensitivity and response/recovery speed were greatly enhanced by UV illumination. A gas sensing mechanism related to oxygen defect was suggested.

Key words: Ozone sensor, Hierarchical SnO2-In2O3, UV-Enhanced, Room temperature