Green-emitting phosphors and devices thereof

Patent metadata

Field	Value
Publication number	US-11094856-B2
Application number	US-202016882133-A
Country	US
Kind code	B2
Filing date	May 22, 2020
Priority date	Sep 20, 2017
Publication date	Aug 17, 2021
Grant date	Aug 17, 2021

Abstract

A device including an LED light source optically coupled to a phosphor selected from [Y,Gd,Tb,La,Sm,Pr,Lu]3[Al,Ga]5−aO12−3/2a:Ce3+ (wherein 0<a<0.5), beta-SiAlON:Eu2+, [Sr,Ca,Ba][Al,Ga,In]2S4:Eu2+, alpha-SiAlON doped with Eu2+ and/or Ce3+, Ca1−h−rCehEurAl1−h[Mg,Zn]hSiN3, (where 0<h<0.2, 0<r<0.2), Sr(LiAl3N4):Eu2+, [Ca,Sr]S:Eu2+ or Ce3+, [Ba,Sr,Ca]bSigNm:Eu2+ (wherein 2b+4g=3m), quantum dot materials, and combinations thereof; and 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.

First claim

The invention claimed is:

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

wherein,
the U 6+ -doped phosphate-vanadate phosphors are selected from the group consisting of:
(A1) [Ba, Sr, Ca, Mg][B, Al, Ga, In][P, V]O 5 : U 6+ ;
(A2) Ba 2−x [Sr, Ca, Mg] x [P 1−y , V y ] 2 O 7 : U 6+ ; wherein 0≤x≤2, 0≤y≤1, and x≠0 when y=0;
(A3) [Ba, Sr, Ca, Mg] 4 [P, V] 2 O 9 : U 6+ ;
(A4) [Ba, Sr, Ca, Mg] 3 [P, V] 4 O 13 : U 6+ ;
(A5) [Ba, Sr, Ca, Mg] 4 [B, Al, Ga, In][P, V]O 8 : U 6+ ;
(A6) [Ba, Sr, Ca, Mg] 6 [B, Al, Ga, In] 5 [P, V] 5 O 26 : U 6+ ;
(A7) Ba 3−x [Sr, Ca, Mg] x [P 1−y , V y ] 2 O 8 : U 6+ ; wherein 0≤x≤3, 0≤y≤1, and x≠0 when y=0;
(A8) A 2 [Ba, Sr, Ca, Mg][P, V] 2 O 7 : U 6+ ;
(A9) A[Ba, Sr, Ca, Mg][P, V]O 4 : U 6+ ;
(A10) [Ba, Sr, Ca, Mg][P, V] 2 O 6 : U 6+ ;
(A11) [Ba, Sr, Ca, Mg] 3 [B, Al, Ga, In][P, V]O 7 : U 6+ ; and
(A12) [Ba, Sr, Ca, Mg] 10 [P, V] 6 O 25 : U 6+ ;

the U 6+ -doped halide phosphors are selected from the group consisting of:
(B1) [Ba, Sr, Ca, Mg]X 2 : U 6+ ;
(B2) A[Ba, Sr, Ca, Mg]X 3 : U 6+ ; and
(B3) [Ba, Sr, Ca, Mg] 2 X 4 : U 6+ ;

the U 6+ -doped oxyhalide phosphors are selected from the group consisting of:
(C1) [Ba, Sr, Ca, Mg] 2 [B, Al, Ga, In]O 3 X: U 6+ ;
(C2) [Ba, Sr, Ca, Mg] 2 [P, V]O 4 X: U 6+ ;
(C3) Ba 5-n [Sr, Ca, Mg] n [P 1−m , V m ] 3 O 12 X: U 6+ ; wherein 0≤n≤5, 0≤m≤1, and n≠0 when m=0 and X=F;
(C4) [Ba, Sr, Ca, Mg] 5 [B, Al, Ga, In] 3 O 9 X: U 6+ ; and
(C5) [Ba, Sr, Ca, Mg] 3 [Si, Ge]O 4 X: U 6+ ;

the U 6+ -doped silicate-germanate phosphors are selected from the group consisting of:
(D1) [Ba, Sr, Ca, Mg] 2 [Si, Ge]O 4 : U 6+ ;
(D2) [Ba, Sr, Ca, Mg] 3 [Si, Ge]O 5 : U 6+ ;
(D3) [Ba, Sr, Ca, Mg] 3 [Si, Ge] 2 O 7 : U 6+ ;
(D4) [Ba, Sr, Ca, Mg][Si, Ge]O 3 : U 6+ ;
(D5) [Ba, Sr, Ca, Mg][B, Al, Ga, In] 2 [Si, Ge] 2 O 8 : U 6+ ;
(D6) [Ba, Sr, Ca, Mg] 2 [B, Al, Ga, In] 2 [Si, Ge]O 7 : U 6+ ;
(D7) [Ba, Sr, Ca, Mg] 3 [B, Al, Ga, In] 6 [Si, Ge] 2 O 16 : U 6+ ;
(D8) [Ba, Sr, Ca, Mg] 3 [B, Al, Ga, In] 2 [Si, Ge]O 8 : U 6+ ;
(D9) [Ba, Sr, Ca, Mg] 11 [B, Al, Ga, In] 2 [Si, Ge] 4 O 22 : U 6+ ;
(D10) [Ba, Sr, Ca, Mg] 3 [B, Al, Ga, In] 10 [Si, Ge]O 20 : U 6+ ; and
(D11) [Ba, Sr, Ca, Mg] 6.5 [B, Al, Ga, In] 11 [Si, Ge] 5 O 33 : U 6+ ; and

the U 6+ -doped alkali earth oxide phosphors are selected from the group consisting of:
(E1) [Ba, Sr, Ca, Mg][B, Al, Ga, In] 4 O 7 : U 6+ ;
(E2) [Ba, Sr, Ca, Mg] 3 [B, Al, Ga, In] 2 O 6 : U 6+ ;
(E3) [Ba, Sr, Ca, Mg][B, Al, Ga, In] 6 O 10 : U 6+ ;
(E4) [Ba, Sr, Ca, Mg][B, Al, Ga, In] 2 O 4 : U 6+ ;
(E5) [Ba, Sr, Ca, Mg] 4 [B, Al, Ga, In] 2 O 7 : U 6+ ;
(E6) [Ba, Sr, Ca, Mg] 12 [B, Al, Ga, In] 14 O 33 : U 6+ ;
(E7) A[Ba, Sr, Ca, Mg][B, Al, Ga, In]O 3 : U 6+ ;
(E8) [Ba, Sr, Ca, Mg]O: U 6+ ;
(E9) [Ba, Sr, Ca, Mg] 2 [B, Al, Ga, In, Sc] 2 O 5 : U 6+ ;
(E10) A[Ba, Sr, Ca, Mg] 2 [B, Al, Ga, In] 5 O 10 : U 6+ ; and
(E11) A[Ba, Sr, Ca, Mg] 4 [B, Al, Ga, In] 3 O 9 : U 6+ ;
wherein,
A is Li, Na, K, Rb, Cs, or a combination thereof
X is F, C1, Br or a combination thereof.

2. A device according to claim 1 , wherein the green-emitting U 6+ -doped phosphor is a U 6+ -doped phosphate-vanadate phosphor selected from the group consisting of:
(A1) [Ba, Sr, Ca, Mg][B, Al, Ga, In][P, V]O 5 : U 6+ ;
(A2) Ba 2−x [Sr, Ca, Mg] x [P 1−y , V y ] 2 O 7 : U 6+ ; wherein 0≤x≤2, 0≤y≤1, and x≠0 when y=0;
(A3) [Ba, Sr, Ca, Mg] 4 [P, V] 2 O 9 : U 6+ ;
(A4) [Ba, Sr, Ca, Mg] 3 [P, V] 4 O 13 : U 6+ ;
(A5) [Ba, Sr, Ca, Mg] 4 [B, Al, Ga, In][P, V]O 8 : U 6+ ;
(A6) [Ba, Sr, Ca, Mg] 6 [B, Al, Ga, In] 5 [P, V] 5 O 26 : U 6+ ;
(A7) Ba 3−x [Sr, Ca, Mg] x [P 1−y , V y ] 2 O 8 : U 6+ ; wherein 0≤x≤3, 0≤y≤1, and x≠0 when y=0;
(A8) A 2 [Ba, Sr, Ca, Mg][P, V] 2 O 7 : U 6+ ;
(A9) A[Ba, Sr, Ca, Mg][P, V]O 4 : U 6+ ;
(A10) [Ba, Sr, Ca, Mg][P, V] 2 O 6 : U 6+ ;
(A11) [Ba, Sr, Ca, Mg] 3 [B, Al, Ga, In][P, V]O 7 : U 6+ ; and
(A12) [Ba, Sr, Ca, Mg] 10 [P, V] 6 O 25 : U 6+ .

3. A device according to claim 1 , wherein the green-emitting U 6+ -doped phosphor is a U 6+ -doped halide phosphor selected from the group consisting of:
(B1) [Ba, Sr, Ca, Mg]X 2 : U 6+ ;
(B2) A[Ba, Sr, Ca, Mg]X 3 : U 6+ ; and
(B3) [Ba, Sr, Ca, Mg] 2 X 4 : U 6+ .

4. A device according to claim 1 , wherein the green-emitting U 6+ -doped phosphor is a U 6+ -doped oxyhalide phosphor selected from the group consisting of:
(C1) [Ba, Sr, Ca, Mg] 2 [B, Al, Ga, In]O 3 X: U 6+ ;
(C2) [Ba, Sr, Ca, Mg] 2 [P, V]O 4 X: U 6+ ;
(C3) Ba 5-n [Sr, Ca, Mg] n [P 1−m , V m ] 3 O 12 X: U 6+ ; wherein 0≤n≤5, 0≤m≤1, and n≠0 when m=0 and X=F;
(C4) [Ba, Sr, Ca, Mg] 5 [B, Al, Ga, In] 3 O 9 X: U 6+ ; and
(C5) [Ba, Sr, Ca, Mg] 3 [Si, Ge]O 4 X: U 6+ .

5. A device according to claim 1 , wherein the green-emitting U 6+ -doped phosphor is a U 6+ -doped silicate-germanate phosphor selected from the group consisting of:
(D1) [Ba, Sr, Ca, Mg] 2 [Si, Ge]O 4 : U 6+ ;
(D2) [Ba, Sr, Ca, Mg] 3 [Si, Ge]O 5 : U 6+ ;
(D3) [Ba, Sr, Ca, Mg] 3 [Si, Ge] 2 O 7 : U 6+ ;
(D4) [Ba, Sr, Ca, Mg][Si, Ge]O 3 : U 6+ ;
(D5) [Ba, Sr, Ca, Mg][B, Al, Ga, In] 2 [Si, Ge] 2 O 8 : U 6+ ;
(D6) [Ba, Sr, Ca, Mg] 2 [B, Al, Ga, In] 2 [Si, Ge]O 7 : U 6+ ;
(D7) [Ba, Sr, Ca, Mg] 3 [B, Al, Ga, In] 6 [Si, Ge] 2 O 16 : U 6+ ;
(D8) [Ba, Sr, Ca, Mg] 3 [B, Al, Ga, In] 2 [Si, Ge] 08 : U 6+ ;
(D9) [Ba, Sr, Ca, Mg] 11 [B, Al, Ga, In] 2 [Si, Ge] 4 O 22 : U 6+ ;
(D10) [Ba, Sr, Ca, Mg] 3 [B, Al, Ga, Ge]O 20 : U 6+ ; and
(D11) [Ba, Sr, Ca, Mg] 6.5 [B, Al, Ga, In] 11 [Si, Ge] 5 O 33 : U 6+ .

6. A device according to claim 1 , wherein the green-emitting U 6+ -doped phosphor is a U 6+ -doped alkali earth oxide phosphor selected from the group consisting of:
(E1) [Ba, Sr, Ca, Mg][B, Al, Ga, In] 4 O 7 : U 6+ ;
(E2) [Ba, Sr, Ca, Mg] 3 [B, Al, Ga, In] 2 O 6 : U 6+ ;
(E3) [Ba, Sr, Ca, Mg][B, Al, Ga, In] 6 O 10 : U 6+ ;
(E4) [Ba, Sr, Ca, Mg][B, Al, Ga, In] 2 O 4 : U 6+ ;
(E5) [Ba, Sr, Ca, Mg] 4 [B, Al, Ga, In] 2 O 7 : U 6+ ;
(E6) [Ba, Sr, Ca, Mg] 12 [B, Al, Ga, In] 14 O 33 : U 6+ ;
(E7) A[Ba, Sr, Ca, Mg][B, Al, Ga, In]O 3 : U 6+ ;
(E8) [Ba, Sr, Ca, Mg]O: U 6+ ;
(E9) [Ba, Sr, Ca, Mg] 2 [B, Al, Ga, In, Sc] 2 O 5 : U 6+ ;
(E10) A[Ba, Sr, Ca, Mg] 2 [B, Al, Ga, In] 5 O 10 : U 6+ ; and
(E11) A[Ba, Sr, Ca, Mg] 4 [B, Al, Ga, In] 3 O 9 : U 6+ .

7. A device according to claim 1 , wherein the phosphor is quantum dot materials comprising perovskite quantum dots.

8. A lighting apparatus comprising the device of claim 1 .

9. A backlight apparatus comprising the device of claim 1 .

10. The backlight apparatus according to claim 9 , wherein the green-emitting U 6+ -doped phosphor is [Ba, Sr, Ca, Mg] 6 [B, Al, Ga, In] 5 [P, V] 5 O 26 : U 6+ .

11. A television comprising the backlight apparatus of claim 9 .

12. A mobile phone comprising the backlight apparatus of claim 9 .

13. A computer monitor comprising the backlight apparatus of claim 9 .

1

Assignees

• Gen Electric

Inventors

• Camardello Samuel Joseph
• Setlur Anant A

Classifications

• H10H20/8512 Primary

  Wavelength conversion materials · CPC title

• C01G17/00

  Compounds of germanium · CPC title

• C01G15/006

  Compounds containing gallium, indium or thallium, with or without oxygen or hydrogen, and containing two or more other elements · CPC title

• C01F11/20

  Halides · CPC title

• C01G31/00

  Compounds of vanadium · CPC title