Synthesis, Structural and Optical Characterization of Copper and Rare Earth doped CdS Nanoparticles

Abstract

Cadmium sulphide (CdS) nanoparticles doped with Cu 2+ and co-doped with rare earth metallic ions (Ln 3+ ) have been synthesized by co-precipitation method. The synthesized nanoparticles were 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 and TEM results show that synthesized particles have spherical aggregation. 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.

Realisation of CdS/Mn 3 O 4 nanocomposites for potential photocatalytic applications

“…Interestingly, the DOS has the ability to explain the role of impurity atoms that can provide sufficient number of conduction holes near to the Fermi surface. The aforesaid variations might influence the electronic inter band transitions thereby causing a definite impact on the optical and dielectric properties [15].…”

The effect of rear earth doping CdS nanostructure on structural, optical and photoconductivity properties

“…Cadmium sulphide consider the most common semiconductor due to its high band gap (2.42 eV) and potential applications in the area of electronic and optoelectronic devices fabrications [1], CdS structure classify in three types are namely hexagonal wurtzite, 109 high pressure rock-salt phase and cubic zinc blend, the hexagonal wurtzite is important among these because its stability and easily synthesized [2,3]. Rare earth elements possess interesting optical properties due to their good interaction with light [4][5][6], and provide significant advantages to semiconductors which are important for photoluminescence and other optical properties, they offer the probability of getting radiation with wavelength for blue, green and red light, which are covering all wavelength for operation the devices.…”