EFFECTS OF HEAT TREATMENT ON MORPHOLOGICAL AND OPTICAL PROPERTIES OF ZnS NANOCRYSTALS EMBEDDED IN KBr MATRIX.
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Date
2018-02-05
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Publisher
University of Eloued جامعة الوادي
Abstract
ZnS nanocrystals were embedded in KBr single crystal matrix using Czochralski growth
technique. The X-ray diffraction and optical spectroscopy revealed the incorporation of ZnS
nanocrystals.
A blue shift of the absorption edge of the obtained samples has been observed indicating the
quantum confinement effect. Annealing led to a shift in the absorption edge towards longer
wavelengths and an increasing of the emissions intensity. This results shows that KBr is a
good matrix-host of ZnS nanocrystals and that the elaborated samples can be used for
important technological applications.
Description
Séminaire National Sur Laser Solaire Et Matériaux ElOeued 5-6 Février 2018
Keywords
Annealing; X-ray diffraction; Structural properties; Single crystal, Czochralski method.