Patent ID: 8066908
Filing Date: 2011-11-29
Classification: B82Y,C09K,Y02B

Abstract:
1. A method of preparing a light emitting lanthanide-doped product nanoparticle sol-gel matrix film, said method comprising: preparing precursor nanoparticles comprising lanthanides selected to produce at least one of green, red or blue light when excited with near infrared light; stabilizing said nanoparticles with ligands operative to stabilize the nanoparticles in an aqueous solution and selected to be substantially removed from the sol-gel matrix film during its synthesis; incorporating said stabilized nanoparticles into a sol-gel matrix; and heating said lanthanide doped nanoparticle sol-gel matrix to a temperature suitably selected to increase the signal to noise ratio of the luminescence by substantially removing low molecular weight organic molecules, water and hydroxyl groups, thereby preparing light emitting lanthanide doped product nanoparticle sol-gel matrix film.