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A comparative analysis of the influence of photo- and thermal activation on the sensor properties of cobalt(II) etioporphyrin films

  • Photochemistry and Magnetochemistry
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Abstract

A comparative analysis of dark conductivity and photoconductivity of cobalt(II) etioporphyrin, Co(II)EP, thin films in the presence of various gases was performed. The major contribution to conductivity of both types was made by oxygen molecules adsorbed on the surface of the gas sensitive layer. The concentration of adsorbed oxygen molecules increased under light action on the surface of films, which increased film conductivity at the given temperature. Light action could be used to reach maximum sensor sensitivity of Co(II)EP films toward ammonia at room temperature.

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Authors and Affiliations

  1. Lomonosov State Academy of Fine Chemical Technology, pr. Vernadskogo 86, Moscow, 117571, Russia

    M. A. Gol’dshtrakh, A. A. Ishchenko & Yu. M. Kiselev

  2. Faculty of Chemistry, Moscow State University, Moscow, Russia

    S. G. Dorofeev & Yu. M. Kiselev

  3. Prokhorov Institute of General Physics, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, Russia

    N. N. Kononov

Authors
  1. M. A. Gol’dshtrakh
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  2. S. G. Dorofeev
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  3. A. A. Ishchenko
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  4. Yu. M. Kiselev
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  5. N. N. Kononov
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Corresponding author

Correspondence to M. A. Gol’dshtrakh.

Additional information

Original Russian Text © M.A. Gol’dshtrakh, S.G. Dorofeev, A.A. Ishchenko, Yu.M. Kiselev, N.N. Kononov, 2009, published in Zhurnal Fizicheskoi Khimii, 2009, Vol. 83, No. 10, pp. 1960–1965.

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Gol’dshtrakh, M.A., Dorofeev, S.G., Ishchenko, A.A. et al. A comparative analysis of the influence of photo- and thermal activation on the sensor properties of cobalt(II) etioporphyrin films. Russ. J. Phys. Chem. 83, 1775–1780 (2009). https://doi.org/10.1134/S0036024409100264

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  • DOI: https://doi.org/10.1134/S0036024409100264

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