Phosphors containing borate of terbium, alkaline-earth, and Group-3 metals, and light sources incorporating the same
A phosphor comprises a borate of terbium, at least an alkaline-earth metal, and at least a Group-3 metal. In one embodiment, the phosphor has a formula of A3(D1-xTbx)3(BO3)5; wherein A is at least an alkaline-earth metal selected from the group consisting of calcium, barium, strontium, and magnesium; D is at least a Group-3 metal selected from the group consisting of lanthanum, scandium, and yttrium; and 0<x<0.5. The phosphor can be used in light sources such as those based on mercury discharge or light-emitting diodes and in displays.
General Electric Company
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William Winder Holly Ann Alok Mani Venkatesan
Beers Comanzo Srivastava Manivannan