Lumileds Holding B.v.

Christian Maak

Peter Josef Schmidt

Wolfgang Schnick

Christoph Martiny

Embodiments of the invention are directed to a luminescent ceramic including a first phase and a second phase. The first phase is RAMSiAlNO. R is selected from the group comprising trivalent La, Gd, Tb, Y, Lu; A is selected from the group comprising bivalent Ca, Mg, Sr, Ba, and Eu; and M is selected from the group comprising trivalent Ce, Pr and Sm. The second phase may be or comprise, for example, REASiNOand RESiN, wherein RE is at least one rare-earth element selected from the group consisting of La, Gd, Lu, Y, Ce and Sc and wherein A is at least one metal element selected from the group consisting of Ba, Sr, Ca, Mg, Zn and Eu.

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Aachen, Germany

Christian Maak