Patent ID: 11932791
Assignee: OSRAM OPTO SEMICONDUCTORS GMBH
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  H | IPC C  H

Claim 12:
13. A process for producing a phosphor having the general formula EA7A2T1t1T2t2T3t3NnOo:RE, wherein the process comprises:
providing reactants comprising EA2N, EAO, A2CO3, T12O3, T2O2, T32O5, RE2O3, and combinations thereof;
heating the reactants to a temperature ranging from 800° C., inclusive to 1200° C., inclusive; wherein:
EA is selected from the group of divalent elements;
A is selected from the group of monovalent elements;
T1 is selected from the group of trivalent elements;
T2 is selected from the group of tetravalent elements;
T3 is selected from the group of pentavalent elements;
RE is an activator element;
16+3t1+4t2+5t3−3n−2o=0; and
t1+t2+t3=5; n+o=16; 0≤t1≤4; 0≤t2≤5; 0≤t3≤5; 0≤n≤9; 7≤o≤16.