Light-emitting devices utilizing nanoparticles

A light-emitting device comprising:

• a light source emitting first light;
• a first material substantially transparent to said first light and located to receive at least a portion of said first light;
• particles of a second material dispersed in said first material, said second material having an index of refraction greater than an index of refraction of said first material at a wavelength of said first light, said particles of said second material having diameters less than about said wavelength;
• and
• particles of a third material dispersed in said first material, said particles of said third material having diameters greater than about said wavelength.

A method of fabricating a light-emitting device, said method comprising:

• providing a light source that emits first light;
• providing a first material in optical communication with said light source, said first material substantially transparent to said first light;
• and
• dispersing particles of a second material in said first material, said second material having an index of refraction greater than an index of refraction of said first material at a wavelength of said first light, said particles having diameters less than about said wavelength;
• wherein said dispersing is such that said first material together with said particles of said second material provide a medium having a particular refractive index.