Doping-induced emission of infrared light from Co2+-doped ZnSe quantum dots

Doping-induced emission of infrared light from Co2+-doped ZnSe quantum dots ZnSe quantum dots doped with Co2+ have been prepared in aqueous solution by a one-pot method using thioglycolic acid as stabilizer. The quantum dots were characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), UV–visible spectrophotometry, and spectrofluorimetry. The results confirmed the quantum dots formed a single cubic phase with zinc blende structure. The average particle size of the quantum dots was approximately 5 nm. Co2+ ions were doped into ZnSe lattice sites by substitution. As a result, infrared (IR) emission of Co2+ 4T2(F) → 4A2(F) at approximately 3.5 μm was detected on excitation with 755 nm radiation. Research on Chemical Intermediates Springer Journals

Doping-induced emission of infrared light from Co2+-doped ZnSe quantum dots

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Springer Netherlands
Copyright © 2011 by Springer Science+Business Media B.V.
Chemistry; Inorganic Chemistry ; Catalysis; Physical Chemistry
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