Abstract
Cadmium sulphide (CdS) nanoparticles doped with Cu(2+) and co-doped with rare earth metallic ions (RE3(+)) have been synthesized by co-precipitation method. The synthesized nanoparticles were been characterized by powder X-ray diffraction studies (PXRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), particle size by dynamic light scattering (DLS), UV-visible spectroscopy (UV), and photoluminescence (PL) studies. It is observed that CdS nanoparticles can be co-doped with copper and rare earth metallic ions without altering XRD pattern as indicated by X-ray diffraction results. SEM results show that synthesized particles show spherical aggregation and TEM results show that these particles assembled to give a flower-like morphology. Absorption spectra of all the samples show strong blue shift from bulk CdS. Interesting luminescence pattern with enhanced intensity has been observed for co-doped CdS nanoparticles at room temperature.
Highlights
In the past few decades, synthesis of nanoscale materials in the field of nanotechnology has attracted attention to due to their unique physical and chemical properties.[1,2,3,4] Generally their properties are highly dependent on the size and morphology.[5,6] Much emphasis has been laid on the synthesis and characterization of semiconductor nanoparticles due to their significant quantum confinement effects
The synthesized particles produce highly intense X-ray reflections in their corresponding powder X-ray diffraction studies (PXRD) pattern indicating that all the compounds are crystalline in nature
Cadmium sulphide (CdS) nanoparticles doped with Cu2+ and co-doped with Cu2+–Gd3+, Cu2+–Er3+, Cu2+–Tb3+ were obtained by co-precipitation method
Summary
In the past few decades, synthesis of nanoscale materials in the field of nanotechnology has attracted attention to due to their unique physical and chemical properties.[1,2,3,4] Generally their properties are highly dependent on the size and morphology.[5,6] Much emphasis has been laid on the synthesis and characterization of semiconductor nanoparticles due to their significant quantum confinement effects. These effects result in significant variation in electrical and optical properties of nanoparticles. We report the structural and optical characterization of CdS semiconductor nanoparticles co-doped with Cu2+ and rare earth ions (Ln3+) synthesized by co-precipitation method
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