Lighting device comprising a primary radiation source and a first phosphor

US9719014B2 · kind B2 · utility

Assignees

• OSRAM Opto Semiconductors GmbH · DE
• OSRAM GmbH · DE

Inventors

• Tim Fiedler · Birkenfeld, DE
• Daniel Bichler · Augsburg, DE
• Stefan Lange · Shepperton, GB
• Rebecca Römer · Regensburg, DE
• Frank Jermann · Königsbrunn, DE
• Frauke Thienel · Birkenfeld, DE
• Barbara Huckenbeck · Augsburg, DE
• Alexander Baumgartner · Donaustauf, DE
• Vera Stöppelkamp · Augsburg, DE
• Norbert Bönisch · Königsbrunn, DE
• Hailing Cui · Regensburg, DE

Key dates

• Filing date: Jul 18, 2016
• Grant date: Aug 1, 2017
• Expiry date: Jul 18, 2036

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01L2224/73265
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A phosphor is disclosed. In an embodiment a phosphor includes an inorganic substance which includes, in its composition, at least an element D, an element Al, an element AX, an element SX and an element NX where D includes one, two or more elements selected from the group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, alkali metals and Yb, Al includes one, two or more elements selected from the group consisting of divalent metals not included in D, SX includes one, two or more elements selected from the group consisting of tetravalent metals, AX includes one, two or more elements selected from the group consisting of trivalent metals, and NX includes one, two or more elements selected from the group consisting of O, N, S, C, Cl, and F, wherein the inorganic substance has the same crystal structure as Sr(SraCa1−a)Si2Al2N61.