Patent · US Expired

Phosphor having reduced afterglow and method for manufacturing same

US5518658A · kind A · utility

7Cited by

1References

8Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Wolfgang Rossner · Holzkirchen, DE
Christa Grabmaier · Starnberg, DE
Hermann Boedinger · Munich, DE
Juergen Leppert · Forchheim, DE
Andreas Jahnke · Munich, DE
Wolfgang Schubert · Karup, DK

Key dates

Filing date	Jan 24, 1995
Grant date	May 21, 1996
Priority date	—
Expiry date	Jan 24, 2015

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K11/7771
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A phosphor for a high energy radiation detector is formed by a rare earth oxisulfide having the general sum formula (M.sub.1-x Ln.sub.x).sub.2 O.sub.2 S, wherein M is at least one element of the group Y, La and Gd, Ln stands for at least one element of the group Eu, Ce, Pr, Tb, Yb, Dy, Sm and Ho, and whereby (2.times.10.sup.-1).gtoreq..times..gtoreq.(1.times.10.sup.-6), which also contains molybdenum in a proportion between 10.sup.-1 and 10.sup.-6 mol percent for reducing the afterglow of the phosphor.

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