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Energy transfer under photoexcitation of porous silicon-fullerene nanocomposite in oxygen-containing ambient

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Abstract

The mutual effect of two nanodimensional subsystems, porous silicon (por-Si) and fullerene C60, on the course of photoinduced processes in a por-Si-C60 composite material has been observed. It is demonstrated for the first time that the photoexcitation of this nanocomposite in the atmosphere of normal (triplet) molecular oxygen leads to the self-insulation of silicon nanocrystallites as a result of their oxidation by singlet oxygen species generated under the action of the excited fullerene subsystem. This repassivation of the por-Si surface leads to a significant recovery of the luminescent activity of por-Si.

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Authors and Affiliations

  1. Petrozavodsk State University, Petrozavodsk, Karelia, Russia

    V. B. Pikulev, S. N. Kuznetsov, A. A. Saren, Yu. E. Gardin & V. A. Gurtov

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  1. V. B. Pikulev
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  2. S. N. Kuznetsov
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  3. A. A. Saren
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  4. Yu. E. Gardin
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  5. V. A. Gurtov
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Additional information

Original Russian Text © V.B. Pikulev, S.N. Kuznetsov, A.A. Saren, Yu.E. Gardin, V.A. Gurtov, 2006, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2006, Vol. 32, No. 3, pp. 75–80.

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Pikulev, V.B., Kuznetsov, S.N., Saren, A.A. et al. Energy transfer under photoexcitation of porous silicon-fullerene nanocomposite in oxygen-containing ambient. Tech. Phys. Lett. 32, 129–131 (2006). https://doi.org/10.1134/S106378500602012X

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  • DOI: https://doi.org/10.1134/S106378500602012X

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