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Characterization of CdS nanocrystals embedded in KCl single crystal matrix grown by Czochralski method

✍ Scribed by B. Boudine; M. Sebais; O. Halimi; R. Mouras; A. Boudrioua; P. Bourson

Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
488 KB
Volume
25
Category
Article
ISSN
0925-3467

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✦ Synopsis

The growth of CdS nanocrystals (NCs) embedded in bulk KCl single crystal matrix is performed using the Czochralski method. The X-ray diffraction reveals the incorporation of the CdS NCs with a cubic structure inside the KCl matrix. The optical density measurements of the CdS NCs embedded in KCl single crystal show a shift of the absorption edge towards higher energies. The optical band-gap is estimated to be about of 2.60 eV. The photoluminescence (PL) spectrum of the studied samples presents four emission bands in the range of 2.20-2.56 eV.

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## Abstract Basing on the Pb^2+^ concentrations in the ”︁pure”︁ ends of single KCl crystals, at various dopant concentrations in the original melts, as well as on the Pb^2+^ concentrations along the crystals, the distribution coefficient of the dopant ions is estimated. The origin of possible devia