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Optical investigation of CdS quantum dots in Langmuir–Blodgett films

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Abstract.

Structures with CdS quantum dots produced by the Langmuir–Blodgett (LB) technique were investigated by Raman, IR, and UV spectroscopies. The confinement effect of longitudinal optical (LO) phonons in CdS quantum dots was investigated by Raman spectroscopy. Surface vibrational modes of CdS quantum dots were observed in IR spectra. It was shown experimentally that the frequency of the surface vibrational modes depends on the properties of the surrounding media. An average size of CdS quantum dots of about 3–6.4 nm was obtained from the analysis of UV measurements.

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Authors and Affiliations

  1. Institut für Physik, Technische Universität Chemnitz, D-09107 Chemnitz, Germany (Fax: +49-371/531-3043, E-mail: a.milekhin@physik.tu-chemnitz.de), , , , , , DE

    A. Milekhin, M. Friedrich & D.R.T. Zahn

  2. Institute of Semiconductor Physics, 630090, Novosibirsk, Russia (Fax: +7-383/233-2771, E-mail: milekhin@thermo.isp.nsc.ru), , , , , , RU

    L. Sveshnikova & S. Repinsky

Authors
  1. A. Milekhin
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  2. M. Friedrich
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  3. D.R.T. Zahn
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  4. L. Sveshnikova
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  5. S. Repinsky
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Received: 1 February 1999 / Accepted: 1 April 1999 / Published online: 19 May 1999

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Milekhin, A., Friedrich, M., Zahn, D. et al. Optical investigation of CdS quantum dots in Langmuir–Blodgett films . Appl Phys A 69, 97–100 (1999). https://doi.org/10.1007/s003390050978

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  • DOI: https://doi.org/10.1007/s003390050978

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