SYNTHESIS AND RAMAN STUDIES OF Ce DOPED CdS NANOPARTICLES

Ce doped CdS nanoparticles were successfully synthesized by the cost effective chemical co-precipitation method at room temperature. The structural, morphological, compositional and Raman studies were carried out using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive analysis of X-rays (EDAX) and high resolution Raman spectroscopic techniques respectively. Broadened XRD peaks show the formation of Ce doped CdS nanoparticles with wurtzite structure. SEM and EDAX analysis show surface morphology and elemental composition of prepared nanoparticles. The Raman spectra of undoped and Ce doped CdS nanoparticles showed longitudinal optical mode. Compared with the 1LO and 2LO Raman modes (296 and 590 cm-1) of undoped CdS nanoparticles, the Raman modes of Ce doped CdS nanoparticles were slightly shifted towards lower frequency.