| abstract |
The present invention provides a lighting device comprising a light emitting diode (LED) light source radiation coupled to a composite material comprising a thermally conductive material and a phosphor of formula (I) dispersed in at least a portion of a binder material. The thermally conductive material is indium oxide, tin oxide, indium tin oxide, calcium oxide, barium oxide, strontium oxide, aluminum hydroxide, magnesium hydroxide, calcium hydroxide, barium hydroxide, strontium hydroxide, zinc hydroxide, aluminum phosphate, magnesium phosphate, calcium phosphate, phosphate. Barium, strontium phosphate, diamond, graphene, polyethylene nanofibers, carbon nanotubes, silver metal nanoparticles, copper metal nanoparticles, gold metal nanoparticles, aluminum metal nanoparticles, boron nitride, silicon nitride, alkali metal halide, calcium fluoride , magnesium fluoride, a compound of formula (II), and combinations thereof. |