Mixture containing perovskite compound

Patent metadata

Field	Value
Publication number	US-11739264-B2
Application number	US-202217590295-A
Country	US
Kind code	B2
Filing date	Feb 1, 2022
Priority date	Mar 13, 2017
Publication date	Aug 29, 2023
Grant date	Aug 29, 2023

Abstract

The present disclosure relates to a laminated structure comprising a film comprising a light-emitting perovskite compound, a first substrate, and a second substrate, in which the film is positioned between the first substrate and the second substrate.

First claim

What is claimed is:

1. A laminated structure comprising a film, a first substrate, and a second substrate,
wherein the film is positioned between the first substrate and the second substrate,
wherein the film comprises
(i) a light-emitting perovskite compound comprising
a metal ion,
a monovalent cation positioned at each vertex of a hexahedron having the metal ion at the center in a perovskite type crystal structure, and
one or more kinds of anions selected from the group consisting of a halide ion and a thiocyanate ion, the anion being positioned at each vertex of an octahedron having the metal ion at the center in the perovskite type crystal structure,

(ii) a light-emitting indium compound or light-emitting cadmium compound, and
(iii) at least one selected from the group consisting of acrylic acid ester, methacrylic acid ester, and an acrylic resin, and
wherein the film is a single layer.

2. The laminated structure according to claim 1 , wherein the film further includes (iv) at least one compound selected from the group consisting of ammonia, amine, a carboxylic acid, and salts or ions thereof.

3. The laminated structure according to claim 1 , wherein the light-emitting perovskite compound includes CH 3 NH 3 PbBr 3 , (H 2 N═CH—NH 2 )PbBr 3 , or CsPbBr 3 .

4. The laminated structure according to claim 1 , wherein the light-emitting indium compound includes InP.

5. The laminated structure according to claim 3 , wherein the light-emitting indium compound includes InP.

6. The laminated structure according to claim 1 , wherein the light-emitting indium compound or light-emitting cadmium compound has an inorganic protective layer on a surface of each particle.

7. The laminated structure according to claim 1 , wherein there are two emission peaks in emission spectrum of a light emitted from the film, an absolute value of a difference between wavelengths of the two emission peaks is 30 nm or greater, and a minimum emission intensity in a wavelength range between the two emission peaks is 80% or less of an emission intensity of a higher emission peak between the two emission peaks.

8. The laminated structure according to claim 1 , wherein there are two emission peaks in emission spectrum of a light emitted from the film, an absolute value of a difference between wavelengths of the two emission peaks is 50 nm or greater, and a minimum emission intensity in a wavelength range between the two emission peaks is 50% or less of an emission intensity of a higher emission peak between the two emission peaks.

9. The laminated structure according to claim 1 , wherein there are two emission peaks in emission spectrum of a light emitted from the film, an absolute value of a difference between wavelengths of the two emission peaks is 100 nm or greater, and a minimum emission intensity in a wavelength range between the two emission peaks is 30% or less of an emission intensity of a higher emission peak between the two emission peaks.

10. The laminated structure according to claim 1 , wherein each of the first substrate and the second substrate consists of plastics or glass.

11. The laminated structure according to claim 1 , wherein each of the first substrate and the second substrate consists of polyethylene terephthalate.

12. The laminated structure according to claim 1 , wherein the first substrate is in a form of a film.

13. The laminated structure according to claim 1 , wherein the second substrate is in a form of a film.

14. The laminated structure according to claim 12 , wherein the second substrate is in a form of a film.

15. The laminated structure according to claim 1 , wherein a median diameter (D50) of the light-emitting perovskite compound in a particle size distribution is 4 nm to 100 nm.

16. The laminated structure according to claim 1 , further comprising a sealing layer, wherein the sealing layer is positioned between the first substrate and the second substrate, and the sealing layer sandwiches side surfaces of the film.

17. A light-emitting device comprising the laminated structure according to claim 1 and a light source which irradiates the laminated structure with light.

18. The light-emitting device according to claim 17 , the light source is a light-emitting diode or a laser.

19. A display comprising the light-emitting device according to claim 17 and a display.

20. A laminated structure comprising a film, a first substrate, and a second substrate,
wherein the film is positioned between the first substrate and the second substrate,
wherein the film comprises
(i) a light-emitting perovskite compound comprising
a metal ion,

a monovalent cation positioned at each vertex of a hexahedron having the metal ion at the center in a perovskite type crystal structure,
one or more kinds of anions selected from the group consisting of a halide ion and a thiocyanate ion, the anion being positioned at each vertex of an octahedron having the metal ion at the center in the perovskite type crystal structure,
(ii) a light-emitting indium compound or light-emitting cadmium compound, and
(iii) at least one selected from the group consisting of acrylic acid ester, methacrylic acid ester, and an acrylic resin, and
wherein the film is a plurality of layers.

21. The laminated structure according to claim 20 , wherein the film further includes (iv) at least one compound selected from the group consisting of ammonia, amine, a carboxylic acid, and salts or ions thereof.

22. The laminated structure according to claim 20 , wherein the light-emitting perovskite compound includes CH 3 NH 3 PbBr 3 , (H 2 N═CH—NH 2 )PbBr 3 , or CsPbBr 3 .

23. The laminated structure according to claim 20 , wherein the light-emitting indium compound includes InP.

24. The laminated structure according to claim 22 , wherein the light-emitting indium compound includes InP.

25. The laminated structure according to claim 20 , wherein the light-emitting indium compound or light-emitting cadmium compound has an inorganic protective layer on a surface of a particle.

26. The laminated structure according to claim 20 , wherein there are two emission peaks in emission spectrum of a light emitted from the film, an absolute value of a difference between wavelengths of the two emission peaks is 30 nm or greater, and a minimum emission intensity in a wavelength range between the two emission peaks is 80% or less of an emission intensity of a higher emission peak between the two emission peaks.

27. The laminated structure according to claim 20 , wherein there are two emission peaks in emission spectrum of a light emitted from the film, an absolute value of a difference between wavelengths of the two emission peaks is 50 nm or greater, and a minimum emission intensity in a wavelength range between the two emission peaks is 50% or less of an emission intensity of a higher emission peak between the two emission peaks.

28. The laminated structure according to claim 20 , wherein there are two emission peaks in emission spectrum of a light emitted from the film, an absolute value of a difference between wavelengths of the two emission peaks is 100 nm or greater, and a minimum emission intensity in a wavelength range between the two emission peaks is 30% or less of an emission intensity of a higher emission peak between the two emission peaks.

29. The laminated structure according to claim

Assignees

• Sumitomo Chemical Co
• Nichia Corp

Inventors

• NAITO Shota
• Sakatani Yoshiaki

Classifications

• H10K59/873

  Encapsulations · CPC title

• C09K11/883 Primary

  with zinc or cadmium · CPC title

• C09K11/664 Primary

  Halogenides (C09K11/661 takes precedence) · CPC title

• H10H20/851

  Wavelength conversion means · CPC title

• H10H20/8514

  characterised by their shape, e.g. plate or foil · CPC title