Red emitting phosphor materials for use in LED and LCD applications
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United States of America Patent
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Apr 15, 2008
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N/A
app pub date -
Feb 2, 2005
filing date -
Feb 2, 2005
priority date (Note) -
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Abstract
Phosphor compositions including those having the formulas A.sub.2-xEu.sub.xW.sub.1-yMo.sub.yO.sub.6, where A is selected from Y, Gd, Lu, La, and combinations thereof; and where 0.5.ltoreq.x.ltoreq.1.0, 0.01.ltoreq.y.ltoreq.1.0; M.sub.mO.sub.nX, wherein M is selected from the group of Sc, Y, a lanthanide, an alkali earth metal and mixtures thereof; X is a halogen; 1.ltoreq.m.ltoreq.3; and 1.ltoreq.n.ltoreq.4, and wherein the lanthanide doping level can range from 0.1 to 40% spectral weight; and Eu.sup.3+ activated phosphate or borate phosphors. Also disclosed are light emitting devices including a light source and at least one of the above phosphor compositions.
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