The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 12, 2024
Filed:
Dec. 04, 2020
Lumileds Llc, San Jose, CA (US);
Peter Josef Schmidt, Aachen, DE;
Philipp-Jean Strobel, Aachen, DE;
Volker Weiler, Aachen, DE;
Andreas Tücks, Aachen, DE;
Lumileds LLC, San Jose, CA (US);
Abstract
This specification discloses methods of enhancing the stability and performance of Eudoped narrow band red emitting phosphors. In one embodiment the resulting phosphor compositions are characterized by crystallizing in ordered structure variants of the UCrCcrystal structure type and having a composition of AELiAlSiON:Eu(AE=Ca, Sr, Ba, or a combination thereof, 0<x<0.04, 0≤y<1, 0<z<0.05, y+z≤1). It is believed that the formal substitution (Al,O)by (Si,N)reduces the concentration of unwanted Euand thus enhances properties of the phosphor such as stability and conversion efficiency.