	US 12,286,576 B2
	Luminescent composition
Michael Krames, Mountain View, CA (US); and Marie Anne Van De Haar, Weesp (NL)
Assigned to Seaborough Materials IP B.V., Amsterdam (NL)
Appl. No. 17/184,619
Filed by SEABOROUGH MATERIALS IP I B.V., Amsterdam (NL)
PCT Filed Sep. 13, 2019, PCT No. PCT/EP2019/074568 § 371(c)(1), (2) Date Feb. 25, 2021, PCT Pub. No. WO2020/053427, PCT Pub. Date Mar. 19, 2020.
Claims priority of application No. 18194530 (EP), filed on Sep. 14, 2018.
Prior Publication US 2022/0403237 A1, Dec. 22, 2022
Int. Cl. C09K 11/77 (2006.01)

CPC C09K 11/7774 (2013.01) [C09K 11/77 (2013.01)]

18 Claims

1. Luminescent A luminescent composition, said luminescent composition comprising:

(i) a first emitting material, said first emitting material having a host lattice doped with Eu³⁺ ions;

(ii) a second emitting material, said second emitting material having a host lattice doped with Tb³⁺ ions; and

(iii) a sensitizer material having a host lattice with a garnet structure, doped with Ce³⁺ ions at a doping level of 0.05-5%, which sensitizer material is excitable in the violet-to-blue wavelength range and has an emission spectrum which overlaps at least partly with one or more excitation bands of the first emitting material and which overlaps at least partly with one or more excitation bands of the second emitting material.