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Experimental studies on substituted copper phthalocyanine Langmuir-Blodgett films

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Abstract

Using the Langmuir-Blodgett (LB) technique, novel copper bis(3-hydroxypropyloxy-hexaisopentyloxy)phthalocyanine molecules were deposited on quartz substrates. It is argued on the basis of pressure-area isotherms that films are deposited as monolayers. Optical absorption spectroscopy suggests that the deposited films were uniform. A.c. measurements were performed on LB films in a planar configuration at different temperatures. The power-law dependence of the conductivity on frequency is explained in terms of electronic conduction through hopping over a coulombic barrier 0.66 eV high. The Debye relaxation time is estimated to be of the order 811 µs at room temperature.

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Authors and Affiliations

  1. Electrical and Electronic Engineering Department, South Bank Polytechnic, Borough Road, SE1 0AA, London, UK

    S. Mukhopadhyay

  2. School of Engineering Information Technology, Sheffield City Polytechnic, Pond Street, S1 1WB, Sheffield, UK

    A. K. Ray

  3. School of Chemical Sciences, University of East Anglia, NR4 7TJ, Norwich, UK

    M. J. Cook & J. M. Simmons

  4. Physics Department, Brunel University, UB8 3PH, Uxbridge, Middlesex, UK

    C. A. Hogarth

Authors
  1. S. Mukhopadhyay
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  2. A. K. Ray
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  3. M. J. Cook
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  4. J. M. Simmons
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  5. C. A. Hogarth
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Mukhopadhyay, S., Ray, A.K., Cook, M.J. et al. Experimental studies on substituted copper phthalocyanine Langmuir-Blodgett films. J Mater Sci: Mater Electron 3, 139–143 (1992). https://doi.org/10.1007/BF00695509

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