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Phosphors for LED lamps

United States Patent

August 13, 2013
View the Complete Patent at the US Patent & Trademark Office
A phosphor, a phosphor blend including the phosphor, a phosphor prepared by a process, and a lighting apparatus including the phosphor blend are disclosed. The phosphor has the formula (Ca.sub.1-p-qCe.sub.pK.sub.q).sub.xSc.sub.y(Si.sub.1-rGa.sub.r) or derived from a process followed using disclosed amounts of reactants. In the formula, (0<p.ltoreq.0.06); 0.ltoreq.q.ltoreq.0.06; 0.ltoreq.r.ltoreq.0.2; and In one embodiment, 3<x.ltoreq.3.1; 2.ltoreq.y.ltoreq.2.15; and 3.ltoreq.z.ltoreq.3.2. Similarly, in another embodiment, 3.ltoreq.x.ltoreq.3.1; 2<y.ltoreq.2.15; and 2.8.ltoreq.z.ltoreq.3.2.
Murphy; James Edward (Niskayuna, NY), Manepalli; Satya Kishore (Bangalore, IN), Kumar; Prasanth Nammalwar (Bangalore, IN)
General Electric Company (Niskayuna, NY)
13/ 432,461
March 28, 2012
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH & DEVELOPMENT This invention was made with Government support under contract number DE-EE003251 awarded by the United States Department of Energy. The Government may have certain rights in the invention.