Patent · US Active

Process for production of phosphors

US9580649B2 · kind B2 · utility

2Cited by

4References

24Claims

0Family size

Assignee

Merck Patent GmbH · DE

Inventors

Tim Vosgroene · Ober-Ramstadt, DE
Holger Winkler · Darmstadt, DE
Ralf Petry · Griesheim, DE
Andreas Benker · Herbstein, DE
Christof Hampel · Frankfurt am Main, DE

Key dates

Filing date	Jun 14, 2013
Grant date	Feb 28, 2017
Priority date	—
Expiry date	Jul 9, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH10H20/8512
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a process for the preparation of a europium-doped alkaline-earth metal siliconitride or silicooxynitride having increased emission efficiency. The present invention furthermore relates to europium-doped alkaline-earth metal siliconitrides or silicooxynitrides which are obtainable by the preparation process according to the invention, and to the use of the europium-doped alkaline-earth metal siliconitrides or silicooxynitrides according to the invention as conversion phosphors. The present invention furthermore also relates to a light-emitting device which comprises a europium-doped alkaline-earth metal siliconitride or silicooxynitride according to the invention.

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