"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Structural and optical characterization of CdS nanocrystals embedded in polystyrene matrix

B. HARIECHE1,* , B BOUDINE1, O. HALIMI1, A. FISCHER2, A. BOUDRIOUA2, M. SEBAIS2

Affiliation

  1. Laboratoire de Cristallographie, Département de Physique, Faculté des Sciences, Université Mentouri – Constantine, Route Ain El Bey 25000 Constantine Algeria
  2. Laboratoire de Physique des lasers, CNRS – UMR 7538 Institut Galilée, Université Paris 13, Avenue Jean Baptiste Clément- F 93430 Villetaneuse, France

Abstract

Cadmium sulfide (CdS) nanocrystals embedded in polystyrene matrix were successfully prepared by dispersing the CdS nanosize powder in polystyrene matrix. The structural characterization was performed by X-ray diffraction. The CdS nanocrystals are single crystals of wurtzite phase. The particle of the CdS nanocrystals embedded in polystyrene has nanometric size. The room temperature UV-visible absorption spectra show a shift towards higher energies of the absorption edge. Raman spectra exhibit the longitudinal optical phonon mode (LO) characteristic peak of CdS. The room temperature luminescence is formed by one band situated à 2.50 eV. This band is attributed to a band-to-band transition..

Keywords

CdS nanocrystals, polystyrene, Absorption, Luminescence and Micro-Raman.

Submitted at: Jan. 24, 2011
Accepted at: June 9, 2011

Citation

B. HARIECHE, B BOUDINE, O. HALIMI, A. FISCHER, A. BOUDRIOUA, M. SEBAIS, Structural and optical characterization of CdS nanocrystals embedded in polystyrene matrix, Journal of Optoelectronics and Advanced Materials Vol. 13, Iss. 6, pp. 693-696 (2011)