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Optical properties of cadmium sulfide quantum dots in water solutions

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Abstract

The optical properties of colloidal solutions of quantum dots based on cadmium sulfide semiconductor nanoparticles with different concentrations of the initial components have been studied. The absorption and fluorescence spectra are strongly affected by the presence of local energy states formed by crystal-lattice defects in the band gap. The dependence of the intensity of short-wavelength emission peaks on the excitation energy has been observed. The concentration quenching of fluorescence in the range of 430–490 nm has been found.

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Authors and Affiliations

  1. Institute of Solid State Chemistry, Ural Branch of the Russian Academy of Sciences, ul. Pervomaiskaya 91, Yekaterinburg, 620990, Russia

    S. V. Rempel’ & A. A. Rempel’

  2. Ural Federal University named after the First President of Russia B. N. Yeltsin, ul. Mira 19, Yekaterinburg, 620002, Russia

    S. V. Rempel’ & A. A. Rempel’

  3. All-Russia Research Institute of Optical and Physical Measurements, ul. Ozernaya 46, Moscow, 119361, Russia

    A. D. Levin & A. Yu. Sadagov

Authors
  1. S. V. Rempel’
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  2. A. D. Levin
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  3. A. Yu. Sadagov
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  4. A. A. Rempel’
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Correspondence to S. V. Rempel’.

Additional information

Original Russian Text © S.V. Rempel’, A.D. Levin, A.Yu. Sadagov, A.A. Rempel’, 2015, published in Fizika Tverdogo Tela, 2015, Vol. 57, No. 6, pp. 1087–1091.

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Rempel’, S.V., Levin, A.D., Sadagov, A.Y. et al. Optical properties of cadmium sulfide quantum dots in water solutions. Phys. Solid State 57, 1103–1107 (2015). https://doi.org/10.1134/S106378341506027X

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  • DOI: https://doi.org/10.1134/S106378341506027X

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