title: White-light emission from a blend of CdSeS nanocrystals of different Se:S ratio.
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.
authors: Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India.
authors: Moazzam
authors: M
authors: Ali
authors: Soma
authors: S
authors: Chattopadhyay
authors: Angshuman
authors: A
authors: Nag
authors: Akshay
authors: A
authors: Kumar
authors: Sameer
authors: S
authors: Sapra
authors: S
authors: S
authors: Chakraborty
authors: D D
authors: DD
authors: Sarma