Abstract
We report efficient conversion of any of the primary colors to white light under ambient conditions, by ZnO nanostructures. Not only UV, blue, and NIR LEDs, but also the green and red LEDs can be used for the production of white light. The conversion efficiency is supposed to be high and it is possible to tune the nature of white light (warm, natural and cool). Correlated color temperature can be tailored by changing the excitation source. The white light emission does not depend on vacuum, or doping or any magic size or any specific design of nanocrystal.
Keywords: Solid state lighting, ZnO nanophosphors, white light emission
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