Phosphor compositions and lighting apparatus thereof

摘要

A phosphor composition is disclosed. A phosphor composition, comprises at least 10 atomic % bromine; silicon, germanium or combination thereof; oxygen; a metal M, wherein M comprises zinc (Zn), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), or combinations thereof; and an activator comprising europium. The phosphor composition is formed from combining carbonate or oxides of metal M, silicon oxide, and europium oxide; and then firing the combination. A lighting apparatus including the phosphor composition is also provided. The phosphor composition may be combined with an additional phosphor to generate white light.

主权项

1. A phosphor composition comprising a phase having a nominal formula M5Z2O7(Br4-nXn):A, wherein M is selected from the group consisting of Zn, Mg, Ca, Sr, Ba, and combinations thereof; Z comprises germanium (Ge) or a combination of germanium (Ge) and silicon (Si); X is an additional halogen selected from the group consisting of fluorine (F), chlorine (Cl), iodine (I) and combinations thereof, and n is a number from 0 to 2; and A is an activator comprising europium.