Accession Number:

ADD018859

Title:

Nanoparticle Phosphors Manufactured Using the Bicontinuous Cubic Phase Process

Descriptive Note:

Patent Application, Filed 18 Nov 97

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Report Date:

1997-11-18

Pagination or Media Count:

16.0

Abstract:

Nanocrystalline phosphors are formed within a bicontinuous cubic phase. Accordingly, it is an object of the present invention to provide phosphors having a high light output level. It is another object of the present invention to provide nanocrystalline phosphors that have no or few bulk defects. These and additional objects of the invention are accomplished by forming doped nanocrystalline semiconductor particles within the mesoporous cavities of a bicontinuous cubic phase. The cavities contain at least one of the reactants required to form the semiconductor compound. Any other required reactants are diffused into the mesoporous cavities. Doped nanocrystals are produced by diffusing dopant or activation ions into the mesoporous cavities along with the other reactants or by including dopant or activation ions within the mesoporous cavities of the BCP under conditions such that the nanoparticles are doped with an average of one or less dopant ions per particle. For the purposes of the present specification and claims, the words dopant and activator are used interchangeably to describe the ion that, when placed within the interior of a nanocrystalline particle, provides the particles with phosphorescence.

Subject Categories:

  • Radiation and Nuclear Chemistry
  • Miscellaneous Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE