Nanocrystal doped matrixes

Abstract

The present invention provides matrixes doped with semiconductor nanocrystals. In certain embodiments, the semiconductor nanocrystals have a size and composition such that they absorb or emit light at particular wavelengths. The nanocrystals can comprise ligands that allow for mixing with various matrix materials, including polymers, such that a minimal portion of light is scattered by the matrixes. The matrixes of the present invention can also be utilized in refractive index matching applications. In other embodiments, semiconductor nanocrystals are embedded within matrixes to form a nanocrystal density gradient, thereby creating an effective refractive index gradient. The matrixes of the present invention can also be used as filters and antireflective coatings on optical devices and as down-converting layers. The present invention also provides processes for producing matrixes comprising semiconductor nanocrystals.

1 . A down converting nanocomposite device, comprising a down converting nanocomposite and a power efficiency greater than 25 lm/W.  
     
     
         2 . The down converting nanocomposite device of  claim 1 , comprising a power efficiency greater than 50 lm/W.  
     
     
         3 . The down converting nanocomposite device of  claim 1 , comprising a power efficiency greater than 100 lm/W.  
     
     
         4 . The down converting nanocomposite device of  claim 1 , comprising a power efficiency greater than 150 lm/W.  
     
     
         5 . The down converting nanocomposite device of  claim 1 , comprising a power efficiency greater than 200 lm/W.  
     
     
         6 . The down converting nanocomposite device of  claim 1 , wherein said nanocomposite comprises two or more semiconductor nanocrystals emit light at one or more selected wavelengths.  
     
     
         7 . The down converting nanocomposite device of  claim 6 , wherein said semiconductor nanocrystals provide a CRI of greater than about 80.  
     
     
         8 . The down converting nanocomposite device of  claim 6 , comprising a matrix, said matrix coupled to said two or more semiconductor nanocrystals via one or more chemical moieties.