Mixture containing perovskite compound

Patent metadata

Field	Value
Publication number	US-11268023-B2
Application number	US-201816491800-A
Country	US
Kind code	B2
Filing date	Mar 8, 2018
Priority date	Mar 13, 2017
Publication date	Mar 8, 2022
Grant date	Mar 8, 2022

Abstract

The present invention relates to a mixture of a compound (1) and a compound (2). The compound (1) is a light-emitting perovskite compound which includes components A, B, and X, and the compound (2) is a light-emitting indium compound or light-emitting cadmium compound. The component A indicates a component positioned at each vertex of a hexahedron having the component B at the center in a perovskite type crystal structure and is a monovalent cation, the component X indicates a component positioned at each vertex of an octahedron having the component B at the center in the perovskite type crystal structure and is one or more kinds of anions selected from the group consisting of a halide ion and a thiocyanate ion, and the component B indicates a component positioned at the centers of the hexahedron where the component A is disposed at each vertex and the octahedron where the component X is disposed at each vertex in the perovskite type crystal structure and is a metal ion.

First claim

What is claimed is:

1. A mixture comprising:
(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 compound selected from the group consisting of ammonia, an amine, a carboxylic acid, and salts or ions thereof; and
(iv) polymethyl methacrylate (PMMA).

2. The mixture according to claim 1 , wherein a total content ratio of the light-emitting perovskite compound, the light-emitting indium compound or light-emitting cadmium compound, and the PMMA is 90% by mass or greater with respect to a total mass of the mixture.

3. The mixture according to claim 1 , wherein the mixture comprises the light-emitting indium compound.

4. The mixture according to claim 1 , further comprising: at least one solvent selected from the group consisting of ester, ketone, ether, alcohol, glycol ether, an organic solvent containing an amide group, an organic solvent containing a nitrile group, an organic solvent containing a halogenated hydrocarbon group, and an organic solvent containing a hydrocarbon group.

5. The mixture according to claim 1 , wherein the average particle diameter of the perovskite compound is from 1 nm to 500 nm.

6. The mixture according to claim 1 , wherein the median diameter (D50) of the perovskite compound is from 2 nm to 5 μm.

7. The mixture according to claim 1 , wherein the monovalent cation comprises at least one ion selected from the group consisting of a cesium ion, an organic ammonium ion, and an amidinium ion.

8. The mixture according to claim 1 , wherein the anions comprise the halide ion.

9. The mixture according to claim 1 , wherein the metal ion comprises lead or tin.

10. A film which is formed of the mixture according to claim 2 .

11. A laminated structure comprising: the film according to claim 10 .

12. A light-emitting device comprising: the laminated structure according to claim 11 .

13. A display comprising: the laminated structure according to claim 11 .

Assignees

• Sumitomo Chemical Co

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