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Free charge carrier repartition over the surface of photosensitive materials: Why and how to manage?

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Abstract

The free charge carrier repartition over the surface of the photosensitive solids can be efficiently managed by selective elimination of the “parasite” free charge carriers (FCCs) from the exited body. This makes it possible to “correct” the natural FCC repartition law represented by the well-known fifty-fifty ratio (1 generated electron in conduction band versus 1 hole formed in valence band) and to better protect the FCCs against recombination. The chemical design principles of the FCC selective photo-generators (FCCP-Ss) were formulated. The functioning mechanism of the hole selective nanocomposite photo-generators (Sh+-FCCPs) was examined. This type of active materials generating mainly the most powerful oxidation agents (OH0 radicals) is suitable for application in oxidation photocatalysis, microbiological object sterilization, and self-cleaning surface development.

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Authors and Affiliations

  1. Ecole Nationale Superieure des Techniques Industrielles et des Mines d’Ales, Ales, France

    A. A. Evstratov, C. Chis, J. -M. Taulemesse, P. Gaudon & T. Vincent

  2. St. Petersburg State Institute of Technology (Technical University), Moskovskii pr. 26, St. Petersburg, 190013, Russia

    A. A. Malygin

Authors
  1. A. A. Evstratov
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  2. C. Chis
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  3. A. A. Malygin
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  4. J. -M. Taulemesse
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  5. P. Gaudon
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  6. T. Vincent
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Corresponding author

Correspondence to A. A. Malygin.

Additional information

Original Russian Text © A.A. Evstratov, C. Chis, A.A. Malygin, J.-M. Taulemesse, P. Gaudon, T. Vincent, 2008, published in Rossiiskii Khimicheskii Zhurnal, 2007, Vol. 51, No. 6, pp. 52–60.

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Evstratov, A.A., Chis, C., Malygin, A.A. et al. Free charge carrier repartition over the surface of photosensitive materials: Why and how to manage?. Russ J Gen Chem 78, 1070–1080 (2008). https://doi.org/10.1134/S107036320805040X

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  • DOI: https://doi.org/10.1134/S107036320805040X

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