Nano Archive

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, D. D. (2007) White-light emission from a blend of CdSeS nanocrystals of different Se:S ratio. NANOTECHNOLOGY, 18 (7).

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Official URL: http://www.iop.org/EJ/abstract/0957-4484/18/7/0754...

Abstract

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:Article
Subjects:Physical Science > Nanophysics
ID Code:6185
Deposited By:IoN
Deposited On:10 Sep 2009 15:31
Last Modified:10 Sep 2009 15:31

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