Phosphor, method for producing a phosphor and use of a phosphor

US10711191B2 · 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 13, 2017
• Grant date: Jul 14, 2020
• Expiry date: May 30, 2038

Classification

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

Abstract

A phosphor and a lighting device are disclosed. In an embodiment a lighting device includes a first phosphor disposed in a beam path of the primary radiation source, wherein the first phosphor has the formula Sr(SraM1−a)Si2Al2(N,X)6:D,A,B,E,G,L, wherein element M is selected from Ca, Ba, Mg or combinations thereof, wherein element D is one or more elements selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, alkali metals or Yb, wherein element A is selected from divalent metals different than those of the elements M and D, wherein element B is selected from trivalent metals, wherein element E is selected from monovalent metals, wherein element G is selected from tetravalent elements, wherein element L is selected from trivalent elements, wherein element X is selected from O or halogen, and wherein a parameter a is between 0.6 and 1.0.