SEMICONDUCTOR DEVICES

Impedance hygrometer based on cellulose and CuPc

Kh. S. Karimov, T. A. Qasuria and Zubair Ahmad

+ Author Affiliations

PDF

Abstract: An investigation has been made on the properties of an impedance hygrometer fabricated using cellulose and copper phthalocyanine (Ag/cellulose/CuPc/Ag). A 5wt% suspension of cellulose was prepared in water while the CuPc was dissolved in methanol. Cellulose film was deposited on glass substrates with preliminary deposited metallic electrodes followed by deposition of CuPc film. The resistances and capacitances of the samples were evaluated under the effect of humidity. The impedance was calculated from resistance and capacitance measurements. It was also measured during the experiment. It was observed that the capacitance of the sensor increases and resistance and impedance decrease with an increase in the relative humidity level. It was found that the impedance–humidity relationship showed more uniform changes in the interval of 31%–98% RH than the resistance– and capacitance–humidity relationships that showed visible changes in the humidity intervals of 31%–80% RH and 80%–98% RH respectively. The humiditydependent impedance of the sample makes it attractive for use in impedance hygrometers. The impedance hygrometer may be used in instruments for the environmental monitoring of humidity.

Key words: cellulose

  • Search

    Advanced Search >>

    GET CITATION

    shu

    Export: BibTex EndNote

    Article Metrics

    Article views: 2948 Times PDF downloads: 1466 Times Cited by: 0 Times

    History

    Received: 18 August 2015 Revised: 25 January 2010 Online: Published: 01 June 2010

    Catalog

      Email This Article

      User name:
      Email:*请输入正确邮箱
      Code:*验证码错误
      Kh. S. Karimov, T. A. Qasuria, Zubair Ahmad. Impedance hygrometer based on cellulose and CuPc[J]. Journal of Semiconductors, 2010, 31(6): 064011. doi: 10.1088/1674-4926/31/6/064011 K S Karimov, T A Qasuria, Z Ahmad. Impedance hygrometer based on cellulose and CuPc[J]. J. Semicond., 2010, 31(6): 064011. doi:  10.1088/1674-4926/31/6/064011.Export: BibTex EndNote
      Citation:
      Kh. S. Karimov, T. A. Qasuria, Zubair Ahmad. Impedance hygrometer based on cellulose and CuPc[J]. Journal of Semiconductors, 2010, 31(6): 064011. doi: 10.1088/1674-4926/31/6/064011

      K S Karimov, T A Qasuria, Z Ahmad. Impedance hygrometer based on cellulose and CuPc[J]. J. Semicond., 2010, 31(6): 064011. doi:  10.1088/1674-4926/31/6/064011.
      Export: BibTex EndNote

      Impedance hygrometer based on cellulose and CuPc

      doi: 10.1088/1674-4926/31/6/064011
      • Received Date: 2015-08-18
      • Accepted Date: 2009-12-26
      • Revised Date: 2010-01-25
      • Published Date: 2010-06-03

      Catalog

        /

        DownLoad:  Full-Size Img  PowerPoint
        Return
        Return