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On the mechanism of luminescence from porous silicon nanostructures

  • Basic Problems of Optics
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Abstract

A strong nonlinear increase in the photoluminescence intensity under laser excitation at room temperature is found for porous silicon obtained by anodic oxidation. It is shown that the maximum photoluminescence intensity corresponds to samples of anodically oxidized porous silicon in the intermediate oxidation state. Laser excitation is found to increase the intensity of vibrational modes in the О3–SiH, Si–O–Si, and Si–O–H configurations with respect to the Si–H n mode intensity in IR absorption spectra. It is experimentally confirmed that the oxide structure on the surface of silicon crystallites and the structure of the Si/SiO2 interface determine to a great extent the photoluminescence characteristics.

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Authors and Affiliations

  1. Far Eastern State Transport University, Khabarovsk, 680021, Russia

    D. T. Yan

  2. Institute of Automatics and Control Processes, Far East Branch, Russian Academy of Sciences, Vladivostok, 690041, Russia

    N. G. Galkin

Authors
  1. D. T. Yan
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  2. N. G. Galkin
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Correspondence to D. T. Yan.

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Original Russian Text © D.T. Yan, N.G. Galkin, 2015, published in Optika i Spektroskopiya, 2015, Vol. 119, No. 5, pp. 741–744.

VIII International Conference “Basic Problems of Optics” (BPO-2014, October 20–24, 2014, St. Petersburg).

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Yan, D.T., Galkin, N.G. On the mechanism of luminescence from porous silicon nanostructures. Opt. Spectrosc. 119, 766–769 (2015). https://doi.org/10.1134/S0030400X15110272

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  • DOI: https://doi.org/10.1134/S0030400X15110272

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