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Optical proprieties of ZnS: Cu/ZnS (en Inglés)
Houcine Labiadh
(Autor)
·
LAP Lambert Academic Publishing
· Tapa Blanda
Optical proprieties of ZnS: Cu/ZnS (en Inglés) - Labiadh, Houcine
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Reseña del libro "Optical proprieties of ZnS: Cu/ZnS (en Inglés)"
3-Mercaptopropionic acid capped core/shell ZnS: Cu(3%)/ZnS doped quantum dots (QDs) where synthesized at 95 C in basic aqueous solution using the nucleation doping approach methods. The structural and optical properties of the QDs were characterized by X-ray diffraction (XRD) which confirms the cubic phase blende, whereas transmission electron microscopy (TEM) which shows the nanoparticles are spherical. UV-vis spectroscopy and photoluminescence (PL) spectroscopy. The obtained nearly monodisperse QDs have an average diameter of ca. 3.31 nm and a zinc blende crystal structure. The PL emission wavelength was limited between 500 and 510 nm but PL quantum efficiency of ZnS: Cu/ZnS core/shell nanocrystals increased up to 5 %. The experimental results demonstrate that this method is effective for the preparation of ZnS: Cu/ZnS quantum dots.
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