A Systematic Study of the Optical Properties of Co-, and Ni- Doped Colloidal Cadmium Sulphide Nanoparticles

P. Bhambhani^1, and P. A. Alvi¹

¹Department of Physics, Banasthali University, Banasthali-304022, India

Cite this paper:
P. Bhambhani and P. A. Alvi. A Systematic Study of the Optical Properties of Co-, and Ni- Doped Colloidal Cadmium Sulphide Nanoparticles. Journal of Optoelectronics Engineering. 2016; 4(1):11-16. doi: 10.12691/joe-4-1-3

Abstract

Present research paper deals with the synthesis and characterization of CdS:Co and CdS:Ni nanoparticles. CdS:Co and CdS:Ni nanoparticles are synthesized with the different concentration of Co and Ni with the use of polyethylene glycol (PEG) as capping agent. Samples are characterized by Scanning Electron Microscopy (SEM), Ultraviolet-Visible (UV-VIS) and Photoluminescence (PL) spectroscopy. The size of synthesized nanoparticles is obtained ~50 nm approximately by SEM images. The effect of doping concentration on optical properties of CdS nanoparticles is studied by UV-VIS and PL spectroscopy. Band gap of Cd_1-xCo_xS and Cd_1-xNi_xS nanomaterials decreases with doping concentration. The results demonstrate that the doping concentration play an important role in optical features of nanomaterials. On behalf of the outcomes, it can be reported that the nanoparticles can be utilized as a photodetectors operating in visible region of increasing wavelengths.

Keywords:
CdS: Co CdS: Ni nanoparticles nanomaterials and PEG

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