Abstract

Mn-doped nanocrystals (NCs) have attracted much attention for their excellent properties. In our work, colloidal Mn-doped NCs with high quantum yield are synthesized and enveloped with silica hydrosol. The blend of NCs and silica hydrosol is coated on a blue light-emitting diode (LED), and the appropriate thickness of the NC film is found. White light is gained through the mix of the blue emission of the LED and the orange emission from Mn-doped NC films. The chromaticity coordinates and the image of the white LED indicate that Mn-doped NCs can be a good substitute for YAG:Ce phosphor, and the reliability of the white LED can be improved by enveloping NCs with SiO2.

© 2011 Optical Society of America

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