Conversion material

US7799444B2 · kind B2 · utility

Assignee

• Schott AG · DE

Inventors

• Ulrich Peuchert · Bodenheim, DE
• Thilo Zachau · Bürstadt, DE
• Martin Letz · Mainz, DE
• Joseph Hayden · Clarks Summit, US
• Carol A. Click · Perrysburg, US
• Karine Seneschal · Mainz, DE
• Axel Engel · Ingelheim am Rhein, DE

Key dates

• Filing date: Sep 27, 2005
• Grant date: Sep 21, 2010
• Expiry date: Jun 24, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12618
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention describes a glass and a glass-ceramic which at least includes the constituents SiO2, Al2O3 and Y2O3 and is preferably doped with rare earth ions. The weight ratio between the weight of Y2O3 and the total weight of SiO2, Al2O3 and Y2O3 is at least 0.2, preferably at least 0.4 or more. The rare earth ions can preferably be incorporated in crystal phases which are precipitated out of glass with a high yttrium content.