Nano Archive

Synthesis of CdSe nanocrystals in a noncoordinating solvent: Effect of reaction temperature on size and optical properties

Nag, Angshuman and Sapra, Sameer and Chakraborty, S and Basu, S and Sarma,, D. D. (2007) Synthesis of CdSe nanocrystals in a noncoordinating solvent: Effect of reaction temperature on size and optical properties. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 7 (6). pp. 1965-1968. ISSN 1533-4880

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Official URL: http://www.ingentaconnect.com/content/asp/jnn/2007...

Abstract

Colloidal synthesis of high quality CdSe nanocrystals with controllable size and tunable properties have been one of the most important topics of research over the last decade, in view of its huge technological potentials. CdSe is one of the most studied nanocrystals of this category because of its photoluminescence tunability across the visible spectrum. We have synthesized CdSe nanocrystals using CdO precursor in a noncoordinating solvent and studied the effect of the reaction temperature on the size and optical properties of the nanocrystals. The size of the nanocrystals could be varied systematically in the range of 3.5 to 6.6 nm diameter with a remarkably narrow size distribution by controlling only the reaction temperature, without any need for a post-synthesis processing. The band gap and the corresponding band edge emission could be tuned across the entire visible range by tuning the size of the nanocrystals. The narrow width of the photoluminescence emissions of different colours (blue to red) make these nanocrystals a potential candidate for different optical and optoelectronic devices.

Item Type:Article
Subjects:Physical Science > Nanophysics
Material Science > Functional and hybrid materials
Material Science > Tunnelling and microscopic phenomena
Physical Science > Nano objects
Physical Science > Quantum phenomena
Material Science > Nanostructured materials
Material Science > Nanochemistry
Physical Science > Photonics
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:3920
Deposited By:JNCASR
Deposited On:27 Jan 2009 04:07
Last Modified:12 Feb 2009 15:42

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