Patent · US Active

CE3+ activated luminescent compositions for application in imaging systems

US10018735B2 · kind B2 · utility

1Cited by

16References

16Claims

0Family size

Assignee

KONINIKLIJKE PHILIPS N.V. · NL

Inventors

Cornelis Reinder Ronda · Aachen, DE
Georg Greuel · Roetgen, DE
Thomas Justel · Witten, DE
Benjamin Herden · Aachen, DE
Tim Koecklar · Aachen, DE

Key dates

Filing date	Jul 17, 2014
Grant date	Jul 10, 2018
Priority date	—
Expiry date	Apr 17, 2035

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K11/7773
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A luminescent composition includes a host matrix sensitized by Ce3+ and showing emission in the ultraviolet range. Typical host matrices include fluorides, sulphates, and phosphates, in particular A(Y1-x-yLuxLay)F4, A(Y1-x-yLuxLay)3F10, BaCa(Y1-x-yLuxLay)2F10, and Ba(Y1-x-yLuxLay)2F8, wherein A=Li, Na, K, Rb, or Cs. One or more of these luminescent compositions may be applied as a ceramic or single crystalline converter for CT, PET or SPECT scanners, or as a luminescent powder layer for x-ray intensifying screens.

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