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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 665Study on CdSe Nanoparticles Synthesized by...

Study on CdSe Nanoparticles Synthesized by Chemical Method

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Abstract:

CdSe is a II-VI group semiconducting material with optimum bulk band gap of 1.74eV. It is a promising material due to its wide range of technological applications in optoelectronics devices. CdSe nanoparticles have been synthesized at different temperatures starting from Room temperature to 80°C using appropriate precursor solutions containing Cadmium acetate, Triethanolamine (TEA), Ammonia and Sodium selenosulphate. The pH of Solution was around 10.50 ± 0.10 during synthesis. We confirmed the elemental analysis by Energy Dispersive X-ray Analysis (EDAX) and X-ray Photoelectron Spectroscopy (XPS) technique. X-Ray Diffraction (XRD) studies shows that the synthesized nanoparticles belonged to cubic phase with crystallite size lying between 2nm-4nm. The effect of temperature on particle size, lattice parameter, density of dislocation and strain were investigated. Blue shift of 103nm to125nm has been observed from optical absorption spectra and raman measurements performed at room temperature using He-Ne laser (632nm, 5mW) showed the presence of longitudinal optical phonon modes. Photoluminescence (PL) studies shows a shift of 30nm when compared with the bulk PL emission peak.

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Periodical:

Advanced Materials Research (Volume 665)

Pages:

267-282

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https://doi.org/10.4028/www.scientific.net/AMR.665.267

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Online since:

February 2013

Authors:

M.P. Deshpande, Nitya Garg, Sandip V. Bhatt, Bindiya Soni, Sunil Chaki

Keywords:

Cadmium Selenide, Chemical Synthesis, Nanoparticle, Optical Property, Structural Property

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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