Wednesday, October 31, 2007

US Patent 7288468 - Reduction/Oxidation treatment to increase efficiency of luminescent nanocrystals

This patent from Samsung teaches a method for forming quantum dots that have improved luminescence of blue light. Claims 1 and 16 read:

1. A method for improving the luminescent efficiency of semiconductor nanocrystals which comprises surface-treating the semiconductor nanocrystals with a reducing or oxidizing agent, wherein the nanocrystals are coordinated by an organic dispersant.

16. A semiconductor nanocrystal having a chemically reduced or oxidized surface, wherein the semiconductor nanocrystal is coordinated by an organic dispersant.