US Patent 8143079 - Silicon nanoparticle white LED

http://www.freepatentsonline.com/8143079.html

This patent from Goeken Group Corp. teaches using silicon nanoparticles as both UV blockers and down converters of blue LEDs to create brighter white LEDs. Claim 1 reads:

1. A method of producing a white light emitting diode comprising the steps of:

providing an ultraviolet/blue light emitting diode, and

providing a converter layer of silicon nanoparticles onto an active surface of the ultraviolet/blue light emitting diode.