Abstract
CdTe is an important II-VI binary compound material which is widely used as photovoltaic applications. In this work pure and Copper doped CdTe nanoparticles have been synthesized. The synthesis has been carried out by microwave assisted method. In this study the doping effect of Cu on the structural and optical properties of CdTe nanoparticles have been discussed. For the synthesis of nanoparticles the chemicals used were cadmium acetate, Tellurium powder, ethylene glycol, hydrazine hydrate and copper chloride. The as synthesized CdTe and Cu doped CdTe nanoparticles were found to be in crystalline phase which has been confirmed by X-ray diffraction (XRD). The average size of the nanocrystallites were calculated by using Debye- Scherrer formula and was found to be around 65 nm for pure CdTe and it reduces to 52 nm after doping of Cu in CdTe. The bandgap of the nanoparticles was calculated using UV-Visible absorption spectra. The result showed that the bandgap values were blue shifted from the bulk one.
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