A phosphor may have the empirical formula: (AB).sub.1+x+2yAl.sub.11−x−y(AC).sub.xLi.sub.yO.sub.17:E, where 0<x+y<11; AC=Mg, Ca, Sr, Ba and/or Zn; AB=Na, K, Rb, and/or Cs; and E=Eu, Ce, Yb, and/or Mn. The phosphor may be used in conversion LED components.

A phosphor may have the empirical formula: (AB).sub.1+x+2yAl.sub.11−x−y(AC).sub.xLi.sub.yO.sub.17:E, where 0<x+y<11; x>0; AC=B, Ga, In, or combinations thereof; AB=Na, K, Rb, Cs, or combinations thereof; and E=Eu, Ce, Yb, Mn, or combinations thereof. The phosphor may be used in conversion LED components.

A device including an LED light source optically coupled to a phosphor selected from [Y,Gd,Tb,La,Sm,Pr,Lu].sub.3[Al,Ga].sub.5−aO.sub.12−3/2a:Ce.sup.3+ (wherein 0<a<0.5), beta-SiAlON:Eu.sup.2+, [Sr,Ca,Ba][Al,Ga,In].sub.2S.sub.4:Eu.sup.2+, alpha-SiAlON doped with Eu.sup.2+ and/or Ce.sup.3+, Ca.sub.1−h−rCe.sub.hEu.sub.rAl.sub.1−h[Mg,Zn].sub.hSiN.sub.3, (where 0<h<0.2, 0<r<0.2), Sr(LiAl.sub.3N.sub.4):Eu.sup.2+, [Ca,Sr]S:Eu.sup.2+ or Ce.sup.3+, [Ba,Sr,Ca].sub.bSi.sub.gN.sub.m:Eu.sup.2+ (wherein 2b+4g=3m), quantum dot materials, and combinations thereof; and a green-emitting U.sup.6+-doped phosphor having a composition selected from the group consisting of U.sup.6+-doped phosphate-vanadate phosphors, U.sup.6+-doped halide phosphors, U.sup.6+-doped oxyhalide phosphors, U.sup.6+-doped silicate-germanate phosphors, U.sup.6+-doped alkali earth oxide phosphors, and combinations thereof, is presented.

A device including an LED light source optically coupled to a green-emitting U.sup.6+-doped phosphor having a composition selected from the group consisting of U.sup.6+-doped phosphate-vanadate phosphors, U.sup.6+-doped halide phosphors, U.sup.6+-doped oxyhalide phosphors, U.sup.6+-doped silicate-germanate phosphors, U.sup.6+-doped alkali earth oxide phosphors, and combinations thereof, is presented. The U.sup.6+-doped phosphate-vanadate phosphors are selected from the group consisting of compositions of formulas (A1)-(A12). The U.sup.6+-doped halide phosphors are selected from the group consisting of compositions for formulas (B1)-(B3). The U.sup.6+-doped oxyhalide phosphors are selected from the group consisting of compositions of formulas (C1)-(C5). The U.sup.6+-doped silicate-germanate phosphors are selected from the group consisting of compositions of formulas (D1)-(D11). The U.sup.6+-doped alkali earth oxide phosphors are selected from the group consisting of formulas (E1)-(E11).

A phosphor may have the empirical formula:

(AB).sub.1+x+2yAl.sub.11xy(AC).sub.xLi.sub.yO.sub.17:E, where 0<x+y<11; AC=Mg, Ca, Sr, Ba and/or Zn; AB=Na, K, Rb, and/or Cs; and E=Eu, Ce, Yb, and/or Mn. The phosphor may be used in conversion LED components.

A phosphor may have the empirical formula: (AB).sub.1+x+2yAl.sub.11-x-y(AC).sub.xLi.sub.yO.sub.17:E, where 0<x+y<11; x>0; AC=B, Ga, In, or combinations thereof; AB=Na, K, Rb, Cs, or combinations thereof; and E=Eu, Ce, Yb, Mn, or combinations thereof. The phosphor may be used in conversion LED components.

A device including an LED light source optically coupled to a green-emitting U.sup.6+-doped phosphor having a composition selected from the group consisting of U.sup.6+-doped phosphate-vanadate phosphors, U.sup.6+-doped halide phosphors, U.sup.6+-doped oxyhalide phosphors, U.sup.6+-doped silicate-germanate phosphors, U.sup.6+-doped alkali earth oxide phosphors, and combinations thereof, is presented. The U.sup.6+-doped phosphate-vanadate phosphors are selected from the group consisting of compositions of formulas (A1)-(A12). The U.sup.6+-doped halide phosphors are selected from the group consisting of compositions for formulas (B1)-(B3). The U.sup.6+-doped oxyhalide phosphors are selected from the group consisting of compositions of formulas (C1)-(C5). The U.sup.6+-doped silicate-germanate phosphors are selected from the group consisting of compositions of formulas (D1)-(D11). The U.sup.6+-doped alkali earth oxide phosphors are selected from the group consisting of formulas (E1)-(E11).

A method for producing a phosphor having a core-shell structure that includes: a core part formed of a crystal phase of an inorganic compound containing a metal element M constituting a luminescent center ion and aluminum; and a shell part containing at least one element selected from the group consisting of boron and silicon and formed on at least a portion of a surface of the core part, the method including: mixing a raw material of the crystal phase and a raw material of the shell part; and heating the obtained mixture at a temperature at which the raw material of the shell part is liquefied, but a host crystal of a phosphor to be obtained is maintained, in which the raw material of the crystal phase contains a raw material compound having D50 in a particle diameter distribution of 0.2 to 90 ?m and containing aluminum.

A device including an LED light source optically coupled to a green-emitting U.sup.6+-doped phosphor having a composition selected from the group consisting of U.sup.6+-doped phosphate-vanadate phosphors, U.sup.6+-doped halide phosphors, U.sup.6+-doped oxyhalide phosphors, U.sup.6+-doped silicate-germanate phosphors, U.sup.6+-doped alkali earth oxide phosphors, and combinations thereof, is presented. The U.sup.6+-doped phosphate-vanadate phosphors are selected from the group consisting of compositions of formulas (A1)-(A12). The U.sup.6+-doped halide phosphors are selected from the group consisting of compositions for formulas (B1)-(B3). The U.sup.6+-doped oxyhalide phosphors are selected from the group consisting of compositions of formulas (C1)-(C5). The U.sup.6+-doped silicate-germanate phosphors are selected from the group consisting of compositions of formulas (D1)-(D11). The U.sup.6+-doped alkali earth oxide phosphors are selected from the group consisting of formulas (E1)-(E11).