US 12,024,662 B2 · Mn-activated oxidohalides as conversion luminescent materials for LED-based solid state light sources

Abstract

The present invention relates to Mn-activated luminescent materials, to a process for preparation thereof and to the use thereof as luminophores or conversion luminophores in light sources. The present invention further relates to a radiation-converting mixture comprising the luminescent material of the invention and a light source comprising the luminescent material of the invention or the radiation-converting mixture. The present invention further provides light sources, especially LEDs, and lighting units comprising a primary light source and the luminescent material of the invention or the radiation-converting mixture. The Mn-activated luminescent materials of the invention are especially suitable for creation of warm white light in LEDs.

Claims11

Dependent claims

Compound of the general formula (I):

AB3M1−xX6+2xO2−2x:Mn(IV)x (I)
doped with Mn(IV), where the symbols and indices used are as follows:
A is selected from the group consisting of H and D and mixtures thereof, where D is deuterium;
B is selected from the group consisting of Li, Na, K, Rb, Cs, NH.sub.4, ND.sub.4, NR.sub.4 and mixtures of two or more thereof, where R is an alkyl or aryl radical;
X is selected from the group consisting of F and Cl and mixtures thereof;
M is selected from the group consisting of Cr, Mo, W, Re and mixtures of two or more thereof;
where x is:
0<x<1.0.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/982,994Filed 18 Mar 2019

Priority

EP 1816284420 Mar 2018

Published

US 2021/0024824 A128 Jan 2021

Granted

2 Jul 2024

Term ends

Not estimatedThe source records don’t support an estimate.

Classification21 codes

C09K 11/681
Containing chromium, molybdenum or tungsten: chalcogenides
H05B 33/14
Light sources with substantially two-dimensional [2D] radiating surfaces: characterised by the chemical or physical composition or the arrangement…
C01G 37/006
Compounds of chromium: compounds containing chromium, with or without oxygen or hydrogen, and containing two or more other elements
C01G 39/006
Compounds of molybdenum: compounds containing molybdenum, with or without oxygen or hydrogen, and containing two or more other elements

Mn-activated oxidohalides as conversion luminescent materials for LED-based solid state light sources

Life of this patent

Mn-activated oxidohalides as conversion luminescent materials for LED-based solid state light sources

Life of this patent

Abstract

Claims11