Abstract: A conversion LED comprising a chip which emits primary radiation and a luminescent substance-containing layer which is on the chip or positioned so that it intercepts the primary radiation emitted from the chip and which converts at least some of the primary radiation of the chip into secondary radiation, wherein a first luminescent substance of the A3B5O12:Ce garnet type which emits yellow green and a second luminescent substance of the MAlSiN3:Eu calsine type which emits orange red is used, wherein the peak wavelength of the primary radiation lies in the 435 to 455 nm range, the first luminescent substance being a garnet having essentially the cation A=75 to 100% Lu, remainder Y and a Ce content of 1.5 to 2.

Abstract: An illumination from the class of oxynitridosilicates, doped with bivalent europium and comprising a cation M2+, said illuminant corresponding to the basic formula M(l-c)Si202N2:Dc wherein the following holds good: M=Sr(1-x)Bax mit 0.3<x<0.7.

Abstract: Various embodiments may relate to a device for providing electromagnetic radiation, including a radiation assembly for generating excitation radiation, and at least one conversion element for generating conversion radiation, which has at least one first phosphor and which is arranged at a distance to the radiation assembly in a beam path of the excitation radiation. As the first phosphor, a nitridosilicate of the type M2Si5N8:D is used, wherein D=activator and wherein M is selected from the group barium, strontium, calcium alone or in combination, wherein the mean grain size d50 of the phosphor is at least 10 ?m.

Abstract: LEDs having a low color temperature up to 5000 K, comprising a blue-emitting LED and, connected upstream thereof, two phosphors having a first phosphor from the class of the chliorosilicates and a second phosphor from the class of the nitridosilicates having the formula (Ca,Sr)2Si5N8:Eu.

Abstract: 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 M2Si5N8, where M=one or more elements belonging to the group Sr, Ca, Ba, with the nitridosilicate having been stabilized by an oxidic or oxinitridic—in particular alkaline earth—phase.

Abstract: An optoelectronic component includes a layer sequence having an active region that emits primary electromagnetic radiation, wherein the primary electromagnetic radiation has a wavelength of 430 nm to 470 nm, a conversion material arranged in a beam path of the primary electromagnetic radiation and at least partly converts the primary electromagnetic radiation into a secondary electromagnetic radiation, wherein the conversion material includes a first phosphor having general composition A3B5O12, wherein A is a combination of Lu and Ce, and wherein B is a combination of Al and Ga.

Abstract: There is herein described an LED light source comprising an LED and a ceramic wavelength converter positioned to receive at least a portion of the light emitted by said LED, said ceramic wavelength converter converting at least a portion of the light emitted by said LED into light of a different wavelength, said ceramic wavelength converter comprising a chlorosilicate phosphor and having a density at least about 90% of theoretical density. The chlorosilicate phosphor is preferably a green-emitting Ca8Mg(SiO4)4Cl2:Eu2+ phosphor.

Abstract: 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.

Abstract: A red-emitting phosphor composed of an M-Al—Si—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.

Abstract: A luminophore from the class of nitridic or oxynitridic luminophores with at least one cation M and an activator D, wherein a proportion x of the cation is replaced with Cu and D is at least one element from the series Eu, Ce, Sm, Yb and Tb

Abstract: A red-emitting phosphor composed of an M-Al—Si—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.

Abstract: A conversion LED is provided. The conversion LED may include a primary light source which emits in the short-wave radiation range below 420 nm, and a luminophore placed in front of it consisting of the BAM system as a host lattice for at least partial conversion of the light source's radiation into longer-wave radiation, wherein the BAM luminophore is applied as a thin layer having a thickness of at most 50 ?m directly on the surface of the light source, the BAM luminophore having the general stoichiometry (M1?r Mgr)O*k(Al2O3), where r=0.4 to 0.6 and M=EAeEu1?e, with EA=Ba, Sr, Ca, and e=0.52 to 0.8, and k=1.5 to 4.5.

Abstract: A conversion LED with a chip which emits primary blue radiation, and a layer containing luminescent substance upstream of the chip which converts at least part of the primary radiation of the chip into secondary radiation, wherein a first garnet A3B5O12:Ce yellow-green emitting luminescent substance and a second nitride silicate M2X5Y8:D orange-red emitting luminescent substance is used, wherein the peak wavelength of the primary radiation is in the range of 430 to 450 nm, in particular of up to 445 nm, while the first luminescent substance is a garnet with the cation A=Lu or a mixture of Lu, Y with up a Y fraction of up to 30%, and wherein B has fractions of both Al and Ga, while the second luminescent substance is a nitride silicate which contains both Ba and Sr as cation M, and in which the doping consists of Eu, wherein the second luminescent substance contains 35 to 75 mol.-% Ba for the component M, remainder is Sr, where X=Si and Y=N.

Abstract: A conversion LED comprising a chip which emits primary radiation and, positioned upstream of the chip, a luminescent substance-containing layer which converts at least some of the primary radiation of the chip into secondary radiation, wherein a first yellow-green emitting luminescent substance of the A3B5O12:Ce garnet type and a second orange-red emitting luminescent substance of the MAlSiN3:Eu calsine type is used, wherein the peak wavelength of the primary radiation lies in the 435 to 455 nm range, the first luminescent substance being a garnet having essentially the cation A=Lu or Lu in combination with Y, and B simultaneously having fractions of Al and Ga, while the second luminescent substance is of the basic MAlSiN3:Eu type containing Ca as M with a fraction of at least 80%, in particular at least 90%, preferably at least 95%, where M is Ca alone or predominantly Ca and the remainder of M may be Sr, Ba, Mg, Li or Cu, in each case alone or in combination, and wherein some of the Al up to 20%, preferably

Abstract: There is herein described an LED light source comprising an LED and a ceramic wavelength converter positioned to receive at least a portion of the light emitted by said LED, said ceramic wavelength converter converting at least a portion of the light emitted by said LED into light of a different wavelength, said ceramic wavelength converter comprising a chlorosilicate phosphor and having a density at least about 90% of theoretical density. The chlorosilicate phosphor is preferably a green-emitting Ca8Mg(SiO4)4Cl2:Eu2+ phosphor.

Abstract: 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 M2Si5N8, where M=one or more elements belonging to the group Sr, Ca, Ba, with the nitridosilicate having been stabilized by an oxidic or oxinitridic—in particular alkaline earth—phase

Abstract: A phosphor from the class of nitridosilicates from the M-Al—Si—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?0.375 and the atomic ratio Si/Al?1.4.

Abstract: LED with a low color temperature up to 3500 K, comprising a blue-emitting LED with two phosphors in front of it, a first phosphor from the class of the oxynitridosilicates, having a cation M, which is doped with divalent Europium, and has the empirical formula M(1-c)Si2O2N2:Dc, with M=Sr, or M=Sr(1-x-y)BayCax with x+y<0.5 being used, the oxynitridosilicate completely or predominantly comprising the high-temperature-stable modification HT, and a second phosphor from the class of the nitridosilicates of formula (Ca,Sr)2Si5N8:Eu.

Abstract: 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.

Abstract: Phosphor from the class of the oxynitridosilicates, having a cation M which is doped with divalent europium and having the empirical formula M(1-c)Si2O2N2:Dc, where M=Sr or M=Sr(1-x-y)BaYCax with x+y<0.5 is used, the oxynitridosilicate completely or predominantly comprising the high-temperature-stable modification HT.