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White-light emission from a blend of CdSeS nanocrystals of different Se:S ratio

Ali, Moazzam and Chattopadhyay, Soma and Nag, Angshuman and Kumar, Akshay and Sapra, Sameer and Chakraborty, S and Sarma, DD (2007) White-light emission from a blend of CdSeS nanocrystals of different Se:S ratio. In: Nanotechnology, 18 (7). 075401:1-4.

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CdSeS nanocrystals with different bandgap energies have been synthesized by the colloidal method. The solution blend of blue-, green- and red-emitting CdSeS nanocrystals, in appropriate proportions, showed strong white emission of different shades on excitation with a UV source. We observed that the CIE coordinate of the spectrum of a particular blend is independent of excitation wavelength. We also observed that the contribution of self-absorption in energy loss in the blend of CdSeS nanocrystals is not very significant. A white-light-emitting LED has been fabricated by coating a blend mixed with polymethylmethacrylate on a commercial UV-LED.

Item Type: Journal Article
Publication: Nanotechnology
Publisher: Institute of Physics
Additional Information: Copyright of this article belongs to Institute of Physics.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 26 Mar 2007
Last Modified: 19 Sep 2010 04:36
URI: http://eprints.iisc.ac.in/id/eprint/10195

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