Phosphor process for producing a phosphor and optoelectronic device
AssigneeOSRAM Opto Semiconductors GmbH
InventorsSimon Peschke, Stefan Lange
Life of this patent
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Abstract
A phosphor having the general formula EA7A2T1t1T2t2 T3t3NnOo:RE. 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+3 t1+4 t2+5 t3−3n−2 o=0. t1+t2+t3=5; n+o=16; 0≤t1≤4; 0≤t2≤5; 0≤t3≤5; 0≤n≤9; 7≤o≤16.
Claims20
A phosphor having the general formula EA7A2T1t1T2t2T3t3NnOo:RE, 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+3 t1+4 t2+5 t3−3 n−2 o=0, and
- t1+t2+t3=5;
- n+o=16;
- 0≤t1≤4;
- 0≤t2≤5;
- 0≤t3≤5;
- 0≤n≤9;
- 7≤o≤16.
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.
Dependencies are inferred from the claim text.