Litec-vermogensverwaltungsgesellschaft Mbh

Seoul Semiconductor Co., Ltd.

Thomas Jansen

Thomas Juestel

Ralf Petry

Ingo Koehler

Stefan Tews

Bo Yong Han

Ho Jun Byun

Thomas Jüstel

Inbeom Song

Katharina Sievert

Benjamin Kistner

Ingo KÖHLER

The present invention relates to Mn-activated luminescent materials, to a process for preparation thereof and to the use thereof as luminophores or conversion luminophores in light sources. The present invention further relates to a radiation-converting mixture comprising the luminescent material of the invention and a light source comprising the luminescent material of the invention or the radiation-converting mixture. The present invention further provides light sources, especially LEDs, and lighting units comprising a primary light source and the luminescent material of the invention or the radiation-converting mixture. The Mn-activated luminescent materials of the invention are especially suitable for creation of warm white light in LEDs.

Mn-activated oxidohalides as conversion luminescent materials for LED-based solid state light sources

A compound of the general formula (I): ABFMTOFdoped with Mn(IV), in which A is selected from the group consisting of Li, Na, K, Rb, Cs, Cu, Ag, Tl, NH4, NR4 and mixtures of two or more thereof, where R is an alkyl or aryl group, B is selected from the group consisting of H and D and mixtures thereof, where D is Deuterium, M is selected from the group consisting of Cr, Mo, W, Te, Re and mixtures of two or more thereof, T is selected from the group consisting of Si, Ge, Sn, Ti, Pb, Ce, Zr, Hf and mixtures of two or more thereof, and 0≤x≤1.

Color stable Mn-activated oxidofluorides as conversion luminescent materials for LED-based solid state light sources

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Muenster, Germany

Thomas Jansen