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Resonant Raman scattering in ultrafine CdSxSe1−x colloidal particles

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Abstract

Vibrational spectra of ultrafine (∼1.8 nm) CdS x Se1−x colloidal nanoparticles (NPs) are studied by resonant Raman scattering (RRS). The detected difference of the shape and spectral position of the longitudinal optical vibration band in comparison with the spectrum of slightly larger NPs (≥ 2 nm) is explained by the dominance of surface atoms as their fraction increases above 50%. The correlation of experimental results with ab initio calculated vibrational spectra and with vibration anharmonicity enhancement as the NP size decreases is discussed.

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Authors and Affiliations

  1. Lebedev Physical Institute, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991, Russia

    N. N. Melnik, T. N. Zavaritskaya, I. V. Kucherenko & O. S. Plyashechnik

  2. V. E. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences, pr. Nauki 45, Kyiv, 03028, Ukraine

    M. Ya. Valakh & V. N. Dzhagan

  3. L. V. Pisarzhevsky Institute of Physical Chemistry, National Academy of Sciences, pr. Nauki 31, Kyiv, 03028, Ukraine

    A. E. Raevskaya

Authors
  1. N. N. Melnik
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  2. T. N. Zavaritskaya
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  3. I. V. Kucherenko
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  4. O. S. Plyashechnik
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  5. M. Ya. Valakh
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  6. V. N. Dzhagan
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  7. A. E. Raevskaya
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Correspondence to N. N. Melnik.

Additional information

Original Russian Text © N.N. Melnik, T.N. Zavaritskaya, I.V. Kucherenko, O.S. Plyashechnik, M.Ya. Valakh, V.N. Dzhagan, A.E. Raevskaya, 2011, published in Kratkie Soobshcheniya po Fizike, 2011, Vol. 38, No. 2, pp. 30–37.

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Melnik, N.N., Zavaritskaya, T.N., Kucherenko, I.V. et al. Resonant Raman scattering in ultrafine CdSxSe1−x colloidal particles. Bull. Lebedev Phys. Inst. 38, 48–51 (2011). https://doi.org/10.3103/S1068335611020047

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  • DOI: https://doi.org/10.3103/S1068335611020047

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