	US 11,981,844 B2
	Composition, film, laminated structure, light-emitting device and display
Shota Naito, Tsukuba (JP); and Mizuho Sugiuchi, Tsukuba (JP)
Assigned to SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo (JP)
Appl. No. 17/288,431
Filed by Sumitomo Chemical Company, Limited, Tokyo (JP)
PCT Filed Oct. 28, 2019, PCT No. PCT/JP2019/042118 § 371(c)(1), (2) Date Apr. 23, 2021, PCT Pub. No. WO2020/085516, PCT Pub. Date Apr. 30, 2020.
Claims priority of application No. 2018-202354 (JP), filed on Oct. 26, 2018.
Prior Publication US 2021/0395609 A1, Dec. 23, 2021
Int. Cl. C09K 11/02 (2006.01); B82Y 20/00 (2011.01); B82Y 40/00 (2011.01); C09K 11/61 (2006.01); H01L 33/50 (2010.01)

CPC C09K 11/025 (2013.01) [C09K 11/02 (2013.01); C09K 11/61 (2013.01); H01L 33/502 (2013.01); B82Y 20/00 (2013.01); B82Y 40/00 (2013.01)]

18 Claims

1. A luminescent composition comprising

a component (1) which is a 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

at least one anion selected from the group consisting of a halide ion and a thiocyanate ion, the ion being positioned at each vertex of an octahedron having the metal ion at the center in the perovskite type crystal structure;

a component (2) which is a halogen-containing compound; and

a component (10) which is a luminescent semiconductor material,

wherein a mass ratio of halide ions contained in the component (2) to the component (10) (mass of halide ions contained in the component (2)/mass of the component (10)) is 3.0 or less.