Manganese-doped red luminescent material and conversion LED

Patent metadata

Field	Value
Publication number	US-12152185-B2
Application number	US-202017610736-A
Country	US
Kind code	B2
Filing date	May 11, 2020
Priority date	May 15, 2019
Publication date	Nov 26, 2024
Grant date	Nov 26, 2024

Abstract

A luminophore having the empirical formula A 3 M*O x F 9-2x :Mn 4+ where A may be or include Li, Na, Rb, K, Cs, or combinations thereof. M* may be or include Cr, Mo, W, or combinations thereof. x may be or include 0<x<4.5.

First claim

The invention claimed is:

1. A luminophore having the empirical formula A 3 M*O x F 9-2x :Mn 4+ ;
wherein:
A is selected from the group consisting of Li, Na, Rb, K, Cs, and combinations thereof;
M* is selected from the group consisting of Cr, Mo, W, and combinations thereof; and
0<x<4.5.

2. The luminophore as claimed in claim 1 , wherein
x=1, x=2, x=3, or x=4.

3. The luminophore as claimed in claim 1 having the empirical formula (K 1-z A* z ) 3 M*O x F 9-2x :Mn 4+ ;
wherein:
A* is selected from the group consisting of Li, Na, Rb, Cs, and combinations thereof;
M* is selected from the group consisting of Cr, Mo, W, and combinations thereof;
0≤z≤1; and
x=1, x=2, x=3 or x=4.

4. The luminophore as claimed in claim 1 having the empirical formula K 3 M*O x F 9-2x :Mn 4+ ;
wherein:
M* is selected from the group consisting of Cr, Mo, W, and combinations thereof; and
x=1, x=2, x=3, or x=4.

5. The luminophore as claimed in claim 1 having the empirical formula K 3 M*OF 7 :Mn 4+ ;
wherein:
M* is selected from the group consisting of Cr, Mo, W, and combinations thereof.

6. A conversion LED comprising a luminophore as claimed in claim 2 .

7. The conversion LED as claimed in claim 6 , further comprising:
a semiconductor layer sequence configured to emit electromagnetic primary radiation; and
a conversion element that comprises the luminophore and configured to at least partially convert the electromagnetic primary radiation to electromagnetic secondary radiation.

8. A luminophore having the empirical formula A 3 MO x F 8-2x :Mn 4+ ;
wherein:
A is selected from the group consisting of Li, Na, Rb, K, Cs, and combinations thereof;
M is selected from the group consisting of V, Nb, and combinations thereof; and
1<x<4.

9. The luminophore as claimed in claim 8 , wherein
x=2 or x=3.

10. The luminophore as claimed in claim 9 having the empirical formula (K 1-z A* z ) 3 MO x F 8-2x :Mn 4+ ;
wherein:
A* is selected from the group consisting of Li, Rb, Na, Cs, and combinations thereof;
M is selected from the group consisting of V, Nb, and combinations thereof;
0≤ z≤1; and
x=2 or x=3.

11. The luminophore as claimed in claim 10 having the empirical formula (K 1-z Na z ) 3 MO x F 8-2x :Mn 4+ ;
wherein:
M is selected from the group consisting of V, Nb, and combinations thereof;
0<z≤⅔; and
x=2 or x=3.

12. The luminophore as claimed in claim 11 having the empirical formula (K 1-z Na z ) 3 MO 2 F 4 :Mn 4+ ;
wherein:
M is selected from the group consisting of V, Nb, and combinations thereof; and
0<z≤⅔.

Assignees

• Osram Opto Semiconductors Gmbh

Inventors

• Seibald Markus
• Baumann Dominik
• Stoll Christiane
• Stoll Ion
• Huppertz Hubert
• Heymann Gunter
• Wurst Klaus

Classifications

• H10H20/8512

  Wavelength conversion materials · CPC title

• C09K11/671 Primary

  Chalcogenides · CPC title

• C01P2002/77

  by unit-cell parameters, atom positions or structure diagrams · CPC title

• C01P2002/72

  by d-values or two theta-values, e.g. as X-ray diagram · CPC title

• C01P2002/54

  one element only · CPC title