Osram Gesellschaft MIT Beschrankter Haftung

Osram Ag

Osram Gesellschaft MIT Beschraenkter Haftung

Osram Gmbh

Daniel Becker

Frank Jermann

Tim Fiedler

Bianca Pohl

Martin Zachau

Wolfram Hempel

Herbert Brunner

Christian Koch

Jörg Strauβ

An illumination from the class of oxynitridosilicates, doped with bivalent europium and comprising a cation M2+, said illuminant corresponding to the basic formula MSi0N:Dwherein the following holds good: M=SrBamit 0.3&#x3c;x&#x3c;0.7.

Illuminant and light source containing the same, and method for producing said illuminant

A red-emitting luminescent material that belongs to the class of nitridosilicates and is doped with at least one activator D, in particular Eu, wherein the material is a modified D-doped alkaline earth nitridosilicate MSiN, where M=one or more elements belonging to the group Sr, Ca, Ba, with the nitridosilicate having been stabilized by an oxidic or oxinitridic&#x2014;in particular alkaline earth&#x2014;phase.

Red-emitting SR2S15N8 luminescent material and light source having a luminescent material of such kind as well as a method for producing the luminescent material

A thermally stable phosphor made of the M-Si&#x2014;O&#x2014;N system, having a cation M and an activator D, M being represented by Ba or Sr alone or as a mixture and optionally also being combined with at least one other element from the group Ca, Mg, Zn, Cu. The phosphor is activated with Eu or Ce or Tb alone or as a mixture, optionally in codoping with Mn or Yb. The activator D partially replaces the cation M. The phosphor is produced from the charge stoichiometry MO&#x2014;SiO&#x2014;SiNwith an increased oxygen content relative to the known phosphor MSiON:D, where MO is an oxidic compound.

Thermally stable oxynitride phosphor and light source comprising such a phosphor

A luminescence conversion LED having a radiation emitting chip that is connected to electrical connections and is surrounded by a housing that comprises at least a basic body and a cap, the chip being seated on the basic body, in particular in a cutout of the basic body, and the primary radiation of the chip being converted at least partially into longer wave radiation by a conversion element, wherein the cap is formed by a vitreous body, the conversion means being contained in the vitreous body, the refractive index of the vitreous body being higher than 1.6, preferably at least n=1.7.

Luminescence conversion LED

A red-emitting phosphor composed of an M-Al&#x2014;Si&#x2014;N system, comprising a cation M, wherein M is represented by at least one of the elements Ca or Ba or Sr and, if appropriate, can additionally be combined with at least one further element from the group Mg, Zn, Cd, wherein the phosphor is activated with Eu, which partly replaces M, and wherein the phosphor additionally contains LiF.

Red-emitting luminophore and light source comprising such a luminophore

A phosphor from the class of nitridosilicates from the M-Al&#x2014;Si&#x2014;N system, comprising a cation M, wherein M is represented by Ca alone or is represented by a mixture of Ca with at least one further element from the group Ba, Sr, Mg, Zn, Cd, Li, Na, Cu, wherein the phosphor is activated with at least one element from the group Eu, Ce which partly replaces M, characterized in that the phosphor forms a phase that is to be assigned to the system M3N2-AlN-Si3N4, wherein the atomic ratio of the constituents M:Al&#x2267;0.375 and the atomic ratio Si/Al&#x2267;1.4.

Growing community of inventors

Augsburg, Germany

Daniel Becker