US 10,720,554 B2Granted

Green-emitting phosphors and devices thereof

AssigneeGeneral Electric Company

InventorsSamuel Joseph Camardello, Anant Achyut Setlur

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Abstract

A device including an LED light source optically coupled to a green-emitting U6+-doped phosphor having a composition selected from the group consisting of U6+-doped phosphate-vanadate phosphors, U6+-doped halide phosphors, U6+-doped oxyhalide phosphors, U6+-doped silicate-germanate phosphors, U6+-doped alkali earth oxide phosphors, and combinations thereof, is presented. The U6+-doped phosphate-vanadate phosphors are selected from the group consisting of compositions of formulas (A1)-(A12). The U6+-doped halide phosphors are selected from the group consisting of compositions for formulas (B1)-(B3). The U6+-doped oxyhalide phosphors are selected from the group consisting of compositions of formulas (C1)-(C5). The U6+-doped silicate-germanate phosphors are selected from the group consisting of compositions of formulas (D1)-(D11). The U6+-doped alkali earth oxide phosphors are selected from the group consisting of formulas (E1)-(E11).

Claims21

Dependent claims

A device comprising an LED light source optically coupled to a green-emitting U6+-doped phosphor selected from the group consisting of U6+-doped phosphate-vanadate phosphors, U6+-doped halide phosphors, U6+-doped oxyhalide phosphors, U6+-doped silicate-germanate phosphors, U6+-doped alkali earth oxide phosphors, and combinations thereof;

wherein,
the U6+-doped phosphate-vanadate phosphors are selected from the group consisting of:
(A2) Ba2−x[Sr, Ca, Mg]x[P1−y, Vy]2O7:
U6+;
wherein 0≤x≤2, 0≤y≤1, and x≠0 when y=0;
(A3) [Ba, Sr, Ca, Mg]4[P, V]2O9:
U6+;
(A4) [Ba, Sr, Ca, Mg]3[P, V]4O13:
U6+;
(A5) [Ba, Sr, Ca, Mg]4[B, Al, Ga, In][P, V]O8:
U6+;
(A6) [Ba, Sr, Ca, Mg]6[B, Al, Ga, In]5[P, V]5O26:
U6+;
(A8) A2[Ba, Sr, Ca, Mg][P, V]2O7:
U6+;
(A9) A[Ba, Sr, Ca, Mg][P, V]O4:
U6+;
(A10) [Ba, Sr, Ca, Mg][P, V]2O6:
U6+;
(A11) [Ba, Sr, Ca, Mg]3[B, Al, Ga, In][P, V]O7:
U6+;
and
(A12) [Ba, Sr, Ca, Mg]10[P, V]6O25:
U6+;
the U6+-doped halide phosphors are selected from the group consisting of:
(B2) A[Ba, Sr, Ca, Mg]X3:
U6+;
and
(B3) [Ba, Sr, Ca, Mg]2X4:
U6+;
the U6+-doped oxyhalide phosphors are selected from the group consisting of:
(C1) [Ba, Sr, Ca, Mg]2[B, Al, Ga, In]O3X:
U6+;
(C2) [Ba, Sr, Ca, Mg]2[P, V]O4X:
U6+;
(C4) [Ba, Sr, Ca, Mg]5[B, Al, Ga, In]3O9X:
U6+;
and
(C5) [Ba, Sr, Ca, Mg]3[Si, Ge]O4X:
U6+;
the U6+-doped silicate-germanate phosphors are selected from the group consisting of:
(D1) [Ba, Sr, Ca, Mg]2[Si, Ge]O4:
U6+;
(D2) [Ba, Sr, Ca, Mg]3[Si, Ge]O5:
U6+;
(D3) [Ba, Sr, Ca, Mg]3[Si, Ge]2O7:
U6+;
(D4) [Ba, Sr, Ca, Mg][Si, Ge]O3:
U6+;
(D5) [Ba, Sr, Ca, Mg][B, Al, Ga, In]2[Si, Ge]2O8:
U6+;
(D6) [Ba, Sr, Ca, Mg]2[B, Al, Ga, In]2[Si, Ge]O7:
U6+;
(D7) [Ba, Sr, Ca, Mg]3[B, Al, Ga, In]6[Si, Ge]2O16:
U6+;
(D8) [Ba, Sr, Ca, Mg]3[B, Al, Ga, In]2[Si, Ge]O8:
U6+;
(D9) [Ba, Sr, Ca, Mg]11[B, Al, Ga, In]2[Si, Ge]4O22:
U6+;
(D10) [Ba, Sr, Ca, Mg]3[B, Al, Ga, In]10[Si, Ge]O20:
U6+;
and
(D11) [Ba, Sr, Ca, Mg]6.5[B, Al, Ga, In]11[Si, Ge]5O33:
U6+;
and
the U6+-doped alkali earth oxide phosphors are selected from the group consisting of:
(E1) [Ba, Sr, Ca, Mg][B, Al, Ga, In]4O7:
U6+;
(E2) [Ba, Sr, Ca, Mg]3[B, Al, Ga, In]2O6:
U6+;
(E3) [Ba, Sr, Ca, Mg][B, Al, Ga, In]6O10:
U6+;
(E4) [Ba, Sr, Ca, Mg][B, Al, Ga, In]2O4:
U6+;
(E5) [Ba, Sr, Ca, Mg]4[B, Al, Ga, In]2O7:
U6+;
(E6) [Ba, Sr, Ca, Mg]12[B, Al, Ga, In]14O33:
U6+;
(E7) A[Ba, Sr, Ca, Mg][B, Al, Ga, In]O3:
U6+;
(E9) [Ba, Sr, Ca, Mg]2[B, Al, Ga, In, Sc]2O5:
U6+;
(E10) A[Ba, Sr, Ca, Mg]2[B, Al, Ga, In]5O10:
U6+;
and
(E11) A[Ba, Sr, Ca, Mg]4[B, Al, Ga, In]3O9:
U6+;
wherein,
A is Li, Na, K, Rb, Cs, or a combination thereof
X is F, Cl, Br or a combination thereof.

87 more elements

wherein the U6+-doped phosphate-vanadate phosphors are selected from the group consisting of:
(A2) Ba2−x[Sr, Ca, Mg]x[P1−y, Vy]2O7:
U6+;
wherein 0≤x≤2, 0≤y≤1, and x≠0 when y=0;
(A3) [Ba, Sr, Ca, Mg]4[P, V]2O9:
U6+;
(A4) [Ba, Sr, Ca, Mg]3[P, V]4O13:
U6+;
(A5) [Ba, Sr, Ca, Mg]4[B, Al, Ga, In][P, V]O8:
U6+;
(A6) [Ba, Sr, Ca, Mg]6[B, Al, Ga, In]5[P, V]5O26:
U6+;
(A8) A2[Ba, Sr, Ca, Mg][P, V]2O7:
U6+;
(A9) A[Ba, Sr, Ca, Mg][P, V]O4:
U6+;
(A10) [Ba, Sr, Ca, Mg][P, V]2O6:
U6+;
(A11) [Ba, Sr, Ca, Mg]3[B, Al, Ga, In][P, V]O7:
U6+;
and
(A12) [Ba, Sr, Ca, Mg]10[P, V]6O25:
U6+;
wherein, A is Li, Na, K, Rb, Cs, or a combination thereof;
the U6+-doped halide phosphors are selected from the group consisting of:
(B2) A[Ba, Sr, Ca, Mg]X3:
U6+;
and
(B3) [Ba, Sr, Ca, Mg]2X4:
U6+;
wherein, A is Li, Na, K, Rb, Cs, or a combination thereof;
and X is F, Cl, Br or a combination thereof;
the U6+-doped oxyhalide phosphors are selected from the group consisting of:
(C1) [Ba, Sr, Ca, Mg]2[B, Al, Ga, In]O3X:
U6+;
(C2) [Ba, Sr, Ca, Mg]2[P, V]O4X:
U6+;
(C4) [Ba, Sr, Ca, Mg]5[B, Al, Ga, In]3O9X:
U6+;
and
(C5) [Ba, Sr, Ca, Mg]3[Si, Ge]O4X:
U6+;
wherein X is F, Cl, Br or a combination thereof;
and the U6+-doped alkali earth oxide phosphors are selected from the group consisting of:
(E1) [Ba, Sr, Ca, Mg][B, Al, Ga, In]4O7:
U6+;
(E2) [Ba, Sr, Ca, Mg]3[B, Al, Ga, In]2O6:
U6+;
(E3) [Ba, Sr, Ca, Mg][B, Al, Ga, In]6O10:
U6+;
(E4) [Ba, Sr, Ca, Mg][B, Al, Ga, In]2O4:
U6+;
(E5) [Ba, Sr, Ca, Mg]4[B, Al, Ga, In]2O7:
U6+;
(E6) [Ba, Sr, Ca, Mg]12[B, Al, Ga, In]14O33:
U6+;
(E7) A[Ba, Sr, Ca, Mg][B, Al, Ga, In]O3:
U6+;
(E9) [Ba, Sr, Ca, Mg]2[B, Al, Ga, In, Sc]2O5:
U6+;
(E10) A[Ba, Sr, Ca, Mg]2[B, Al, Ga, In]5O10:
U6+;
and
(E11) A[Ba, Sr, Ca, Mg]4[B, Al, Ga, In]3O9:
U6+
wherein, A is Li, Na, K, Rb, Cs, or a combination thereof.

63 more elements

Dependencies are inferred from the claim text.