Phosphor with an additive for reducing afterglow

US5560867A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Christa Grabmaier · Starnberg, DE
• Hermann Boedinger · Munich, DE
• Juergen Leppert · Forchheim, DE

Key dates

• Filing date: Jul 21, 1995
• Grant date: Oct 1, 1996
• Expiry date: Jul 21, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K11/886
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A new and improved phosphor composition for a radiation detector is provided which includes a rare earth oxisulfide phosphor ceramic containing an afterglow reducing amount of an afterglow suppressant D, wherein D is at least one member selected from the group Zr, Ti, Hf, Se or Te.