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Growth and spectroscopic characterization of organic polymer-stabilized CdS nanoparticles

YU. M. AZHNIUK1,* , V. M. DZHAGAN2, YU. I. HUTYCH1, A. E. RAEVSKAYA3, A. L. STROYUK3, S. YA. KUCHMIY3, M. YA. VALAKH2, D. R. T. ZAHN4

Affiliation

  1. Institute of Electron Physics, Ukr. Nat. Acad. Sci., Universytetska Str. 21, Uzhhorod 88017, Ukraine
  2. Institute of Semiconductor Physics, Ukr. Nat. Acad. Sci., Prospect Nauky 41, Kyiv 03028, Ukraine
  3. Institute of Physical Chemistry, Ukr. Nat. Acad. Sci., Prospect Nauky 31, Kyiv 03028, Ukraine
  4. Chemnitz University of Technology, Semiconductor Physics, D-09107 Chemnitz, Germany

Abstract

CdS nanoparticles were obtained from aqueous solutions at relatively mild conditions and embedded into a matrix of organic polymer (gelatin, polyacrylamide, polyvinyl alcohol). Spectroscopic techniques (absorption, photoluminescence, Raman scattering) are used for their characterization. Raman spectra of the organic-polymer stabilized CdS nanoparticles are discussed taking into account phonon confinement and scattering by surface phonons. The dependence of surface phonon frequency in CdS nanoparticles on the Raman excitation wavelength is observed to be much stronger than on the host medium type..

Keywords

Semiconductor nanoparticles, optical absorption, photoluminescence, Raman scattering.

Submitted at: Sept. 30, 2008
Accepted at: March 24, 2009

Citation

YU. M. AZHNIUK, V. M. DZHAGAN, YU. I. HUTYCH, A. E. RAEVSKAYA, A. L. STROYUK, S. YA. KUCHMIY, M. YA. VALAKH, D. R. T. ZAHN, Growth and spectroscopic characterization of organic polymer-stabilized CdS nanoparticles, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 3, pp. 257-263 (2009)