Borate phosphor materials for use in lighting applications
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United States of America Patent
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Sep 25, 2007
Grant Date -
Sep 21, 2006
app pub date -
Mar 17, 2005
filing date -
Mar 17, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Boron containing phosphor compositions having the formulas (1) M.sub.3Ln.sub.2(BO.sub.3).sub.4 doped with at least one activator selected from the group of Eu.sup.2+, Mn.sup.2+, Pb.sup.2+, Ce.sup.3+, Eu.sup.3+, Tb.sup.3+, and Bi.sup.3+ where M is at least one of Mg, Ca, Sr, Ba, or Zn, and Ln is at least one of Sc, Y, La, Gd, or Lu; (2) M.sub.2-xM'.sub.x(Al, Ga).sub.2-y(Si, Ge).sub.yB.sub.2O.sub.7-zN.sub.z:Eu.sup.2+, Mn.sup.2+, Pb.sup.2+ where M' is one or more of alkali metals Na and/or K, M'' is one or more of alkaline earth Mg, Ca, Sr, Ba or Zn, 0.ltoreq.x.ltoreq.2, 0.ltoreq.y.ltoreq.2, 0.ltoreq.z.ltoreq.4; and z=x+y; (3) M'.sub.2-x+y'M''.sub.x-y'(Al, Ga).sub.2-y(Si, Ge).sub.yB.sub.2O.sub.7-z-y'N.sub.zX.sub.y:Eu.sup.2+, Mn.sup.2+, Pb.sup.2+, where M' is one or more of alkali metals Na and/or K, M'' is one or more of alkaline earth metals Mg, Ca, Sr, Ba and/or Zn, 0.ltoreq.x.ltoreq.2, 0.ltoreq.y.ltoreq.2, 0.ltoreq.z.ltoreq.4; z=x+y, X.dbd.F and/or Cl, and 0.ltoreq.y'.ltoreq.2; (4) M'.sub.2-xM''.sub.xAl.sub.2-y+y'Si.sub.y-y'B.sub.2O.sub.7-z-y'N.sub.zX.su-b.y:Eu.sup.2+, Mn.sup.2+, Pb.sup.2+, where M' and M'' are defined above, 0.ltoreq.x.ltoreq.2, 0.ltoreq.y.ltoreq.2, 0.ltoreq.z.ltoreq.4; z=x+y, X.dbd.F and/or Cl, and 0.ltoreq.y'.ltoreq.2; (5) M'.sub.2-x+x'M''.sub.x-x''Al.sub.2-y+y'Si.sub.y-y'B.sub.2O.sub.7-z-x'-y'N-.sub.zX.sub.(x'+y'):Eu.sup.2+, Mn.sup.2+, Pb.sup.2+, where M' and M'' are defined above, 0.ltoreq.x.ltoreq.2, 0.ltoreq.y.ltoreq.2, 0.ltoreq.z.ltoreq.4; z=x+y, X.dbd.F and/or Cl, and 0.ltoreq.y'.ltoreq.2; (6) MAl.sub.2B.sub.2O.sub.7:Eu.sup.2+, Mn.sup.2+, Pb.sup.2+; where M.dbd.Mg, Ca, Sr, Ba or Zn; (7) MAl.sub.2-xSi.sub.xB.sub.2O.sub.7-xN.sub.x:Eu.sup.2+, Mn.sup.2+, Pb.sup.2+, where M.dbd.Mg, Ca, Sr, Ba and/or Zn, and 0.ltoreq.x.ltoreq.2; and (8) MAl.sub.2B.sub.2-xSi.sub.xO.sub.7-xN.sub.x:Eu.sup.2+, Mn.sup.2+, Pb.sup.2+, where M.dbd.Mg, Ca, Sr, Ba and/or Zn, and 0.ltoreq.x.ltoreq.2. Also disclosed are light emitting devices including a light source and at least one of the above phosphor compositions.
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