Phosphor and method for producing the phosphor

US10479936B2 · kind B2 · utility

Assignee

• OSRAM Opto Semiconductors GmbH · DE

Inventors

• Markus Seibald · Kaufering, DE
• Dominik Baumann · Munich, DE
• Stefan Lange · Shepperton, GB
• Hubert Huppertz · Innsbruck, AT
• Thorsten Schroeder
• Daniel Bichler · Augsburg, DE
• Gudrun Plundrich · Biessenhofen, DE
• Simon Peschke · Aßling, DE
• Gregor Hoerder · Innsbruck, AT
• Gina Maya Achrainer · Greifenberg, DE
• Klaus Wurst · Zirl, AT

Key dates

• Filing date: Nov 22, 2018
• Grant date: Nov 19, 2019
• Expiry date: Nov 22, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02B20/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A phosphor is specified. The phosphor has the general molecular formula: (MA)a(MB)b(MC)c(MD)d(TA)e(TB)f(TC)g(TD)h(TE)i(TF)j(XA)k(XB)l(XC)m(XD)n:E. In this case, MA is selected from a group of monovalent metals, MB is selected from a group of divalent metals, MC is selected from a group of trivalent metals, MD is selected from a group of tetravalent metals, TA is selected from a group of monovalent metals, TB is selected from a group of divalent metals, TC is selected from a group of trivalent metals, TD is selected from a group of tetravalent metals, TE is selected from a group of pentavalent elements, TF is selected from a group of hexavalent elements, XA is selected from a group of elements which comprises halogens, XB is selected from a group of elements which comprises O, S and combinations thereof, —E=Eu, Ce, Yb and/or Mn, XC=N and XD=C. The following furthermore hold true: a+b+c+d=t; e+f+g+h+i+j=u; k+l+m+n=v; a+2b+3c+4d+e+2f+3g+4h+5i+6j−k−2l−3m−4n=w; 0.8≤t≤1; 3.5≤u≤4; 3.5≤v≤4; (−0.2)≤w≤0.2 and 0≤m<0.875 v and/or v≥l>0.125 v.