Patent · US Active

Method for producing a luminescent material, luminescent material and optoelectronic component

US10174245B2 · kind B2 · utility

0Cited by

10References

7Claims

0Family size

Assignee

OSRAM Opto Semiconductors GmbH · DE

Inventors

Bianca Pohl-Klein · Gilching, DE
Daniel Bichler · Augsburg, DE
Raquel de la Pena Alonso · Neubiberg, DE

Key dates

Filing date	Apr 30, 2014
Grant date	Jan 8, 2019
Priority date	—
Expiry date	Apr 6, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH01L2224/73265
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A method for producing a luminescent material includes producing a mixture of starting substances, wherein the starting substances have a first component and a second component. The first component is selected from a group that comprises aluminum, silicon, at least one element of the 2nd main group of the periodic table and at least one element of the lanthanides and combinations thereof. The second component comprises oxygen and/or nitrogen. The method also includes annealing the mixture at a temperature of at least 1300° C. in a reducing atmosphere. After method the annealing, at least one or several phases are obtained. At least one phase comprises a luminescent material. The luminescent material absorbs at least a portion of an electromagnetic primary radiation in the UV or blue range and emits an electromagnetic secondary radiation with an emission maximum of greater than or equal to 600 nm.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.