Abstract: A family of optionally substituted oxonitridoberyllosilicate photoluminescent compositions (i.e., phosphors) is characterized by the formula AE1?x?y?uAy+uBe1?y?z?vBy+z+vSi1?z AlzO1?vN2+v: Eux,Ceu, where AE=Ba, Sr, Ca, Mg; A=Li, Na, K, Rb; 0?x?0.1; 0? u?0.1; 0<(x+u); 0?y?1; 0?z?1; (y+z+v)?1; and (x+y+u)?1. These phosphors may be used in phosphor converted LEDs which may be advantageously employed in illumination and display applications, for example.

Abstract: A method of forming a nitridophosphate is disclosed, the method including forming a precursor mixture by combining a metal source material, a phosphorus source material, and a nitrogen source material, and heating the precursor mixture at a maximum temperature between 800° C. and 1300° C. in an atmosphere including nitrogen gas at a pressure between 2 MPa and 500 MPa.

Abstract: Embodiments of the invention are directed to a luminescent ceramic including a first phase and a second phase. The first phase is R3?x?y?z+w2A1.5x+y?w2MzSi6?w1?w2Alw1?w2N11?y?w1Oy+w1. 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, RE3ASi5N9O2 and RESi3N5, 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.

Abstract: Embodiments of the invention include a wavelength-converting composition as defined by R3-x-y-zAx+yMzSi6-w1Alw1O3x+y+w1N11-7x/3-y-w1?2-2x/3, with ? being vacancies of the structure that are filled by oxygen atoms with 0<x?3, ?3?y<3, 0<z<1,0?w1?6, 0?x+y, x+y+z?3, 11?7/3x?y?w1?0, and 3x+y+w1?13. 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.

Abstract: Embodiments of the invention include a light source and a nitridoberyllate phosphor disposed in a path of light emitted by the light source. The nitridoberyllate phosphor includes a trigonal planar BeN3 structure and/or a tetrahedral Be(N,O)4 structure.

Abstract: The invention provides a lighting unit (100) comprising a light source (10), configured to generate light source light (11) and a luminescent material (20), configured to convert at least part of the light source light (11) into luminescent material light (51), wherein the luminescent material (20) comprises a phosphor (40), wherein this phosphor comprises an alkaline earth aluminum nitride based material having a cubic crystal structure with T5 supertetrahedra, wherein the T5 supertetrahedra comprise at least Al and N, and wherein the alkaline earth aluminum nitride based material further comprises a luminescent lanthanide incorporated therein.

Abstract: The invention provides, amongst others for application in a lighting unit, a phosphor selected from the class of M2D2C2-2bBbA2N6:Ln??(I) with M=selected from the group consisting of divalent Ca, Sr, and Ba; D=selected from the group consisting of monovalent Li, divalent Mg, Mn, Zn, Cd, and trivalent Al and Ga; C=selected from the group consisting of monovalent Li and Cu; B=selected from the group consisting of divalent Mg, Zn, Mn and Cd; A=selected from the group consisting of tetravalent Si, Ge, Ti, and Hf; Ln=selected from the group consisting of ES and RE; ES=selected from the group consisting of divalent Eu, Sm and Yb; RE=selected from the group consisting of trivalent Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, and Tm; and 0?b?1.

Abstract: Embodiments of the invention include a semiconductor light emitting device with a light emitting layer disposed between an n-type region and a p-type region. The light emitting layer emits first light. The device further includes AE1-xLi2Be4O6:Eux, wherein AE=one or more of Sr, Ba, Ca, disposed in the path of the first light. The AE1-xLi2Be4O6:Eux absorbs first light and emits second light. In some embodiments, the first light and second light may be blue.

Abstract: Embodiments of the invention include a semiconductor light emitting device with a light emitting layer disposed between an n-type region and a p-type region. The light emitting layer emits first light. The device further includes AE1-xLi2Be4O6:Eux, wherein AE=one or more of Sr, Ba, Ca, disposed in the path of the first light. The AE1-xLi2Be4O6:Eux absorbs first light and emits second light. In some embodiments, the first light and second light may be blue.

Abstract: Embodiments of the invention are directed to a luminescent ceramic including a first phase and a second phase. The first phase is R3?x?y?z+w2A1.5x+y?w2MzSi6?w1?w2Alw1?w2N11?y?w1Oy+w1. 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, RE3ASi5N9O2 and RESi3N5, 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.

Abstract: Embodiments of the invention include a light source and a nitridoberyllate phosphor disposed in a path of light emitted by the light source. The nitridoberyllate phosphor includes a trigonal planar BeN3 structure and/or a tetrahedral Be(N,O)4 structure.

Abstract: Embodiments of the invention include a wavelength-converting composition as defined by R3?x?y?2Ax+yMzSi6?w1Alw1O3x+y+w1N11?7x/3?y?w1?2?2x/3, with ? being vacancies of the structure that are filled by oxygen atoms with 0<x?3, ?3?y<3, 0<z<1,0?w1?6, 0?x+y, x?y+z?3, 11?7/3x?y?w1?0, and 3x+y+w1?13. 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.

Abstract: The invention provides a lighting unit comprising a light source, configured to generate light source light and a luminescent material, configured to convert at least part of the light source light into luminescent material light, wherein the light source comprises a light emitting diode (LED) and wherein the luminescent material comprises a phosphor comprising M2AX6 doped with tetravalent manganese, wherein M comprises monovalent cations, at least comprising potassium and rubidium, wherein A comprises a tetravalent cation, at least comprising silicon, wherein X comprises a monovalent anion, at least comprising fluorine, and wherein M2AX6 has the hexagonal phase.

Abstract: The invention provides, amongst others for application in a lighting unit, a phosphor selected from the class of M2D2C2-2bBbA2N6:Ln ??(I) with M=selected from the group consisting of divalent Ca, Sr, and Ba; D=selected from the group consisting of monovalent Li, divalent Mg, Mn, Zn, Cd, and trivalent Al and Ga; C=selected from the group consisting of monovalent Li and Cu; B=selected from the group consisting of divalent Mg, Zn, Mn and Cd; A=selected from the group consisting of tetravalent Si, Ge, Ti, and Hf; Ln=selected from the group consisting of ES and RE; ES=selected from the group consisting of divalent Eu, Sm and Yb; RE=selected from the group consisting of trivalent Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, and Tm; and 0?b?1.

Abstract: The invention provides a lighting unit (100) comprising a light source (10), configured to generate light source light (11) and a luminescent material (20), configured to convert at least part of the light source light (11) into luminescent material light (51), wherein the luminescent material (20) comprises a phosphor (40), wherein this phosphor comprises an alkaline earth aluminum nitride based material having a cubic crystal structure with T5 supertetrahedra, wherein the T5 supertetrahedra comprise at least Al and N, and wherein the alkaline earth aluminum nitride based material further comprises a luminescent lanthanide incorporated therein.

Abstract: The invention provides, amongst others for application in a lighting unit, a phosphor having the formula M1?x?y?zZzAaBbCcDdEeN4?nOn:ESxREy (I), with M=selected from the group consisting of Ca, Sr, and Ba; Z=selected from the group consisting of monovalent Na, K, and Rb; A=selected from the group consisting of divalent Mg, Mn, Zn, and Cd; B=selected from the group consisting of trivalent B, Al and Ga; C=selected from the group consisting of tetravalent Si, Ge, Ti, and Hf; D=selected from the group consisting of monovalent Li, and Cu; E=selected for the group consisting of P, V, Nb, and Ta; ES=selected from the group consisting of divalent Eu, Sm and Yb; RE=selected from the group consisting of trivalent Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, and Tm; 0?x?0.2; 0?y?0.2; 0<x+y?0.4; 0?z<1; 0?n?0.5; 0?a?4 (such as 2?a?3); 0?b?4; 0?c?4; 0?d?4; 0?e?4; a+b+c+d+e=4; and 2a+3b+4c+d+5e=10?y?n+z.

Abstract: The invention provides a lighting unit comprising a light source, configured to generate light source light and a luminescent material, configured to convert at least part of the light source light into luminescent material light, wherein the light source comprises a light emitting diode (LED) and wherein the luminescent material comprises a phosphor comprising M2AX6 doped with tetravalent manganese, wherein M comprises monovalent cations, at least comprising potassium and rubidium, wherein A comprises a tetravalent cation, at least comprising silicon, wherein X comprises a monovalent anion, at least comprising fluorine, and wherein M2AX6 has the hexagonal phase.

Abstract: The invention provides, amongst others for application in a lighting unit, a phosphor having the formula M1?y?zZzAaBbCcDdEeN6?nOn:ESx,REy (I), with M=selected from the group consisting of divalent Ca, Sr, and Ba; Z=selected from the group consisting of monovalent Na, K, and Rb; B=selected from the group consisting of divalent Mg, Mn, Zn, and Cd; C=selected from the group consisting of trivalent B, Al and Ga; D=selected from the group consisting of tetravalent Si, Ge, Ti, and Hf; A=selected from the group consisting of monovalent Li, and Cu; E=selected for the group consisting of P, V, Nb, and Ta; ES=selected from the group consisting of divalent Eu, Sm and Yb; RE=selected from the group consisting of trivalent Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, and Tm; 0?x?0.2; 0?y?0.2; 0<x+y?0.4; 0?z<1;x+y+z<1; 0?n?0.75; 0?a?2 (such as 0?b?0.5); 0?b?2; 0?c?4; 0?d?4; 0?e?4; a+b=2; c+d+e=4; and a+2b+3c+4d+e+y?z=16?n.

Abstract: The invention provides a lighting unit comprising a light source, configured to generate light source light and a luminescent material, configured to convert at least part of the light source light into luminescent material light, wherein the light source comprises a light emitting diode (LED) and wherein the luminescent material comprises a phosphor comprising M2AX6 doped with tetravalent manganese, wherein M comprises monovalent cations, at least comprising potassium and rubidium, wherein A comprises a tetravalent cation, at least comprising silicon, wherein X comprises a monovalent anion, at least comprising fluorine, and wherein M2AX6 has the hexagonal phase.

Abstract: The invention provides, amongst others for application in a lighting unit, a phosphor having the formula M1?x?y?zZzAaBbCcDdEeN4?nOn:ESxREy (I), with M=selected from the group consisting of Ca, Sr, and Ba; Z=selected from the group consisting of monovalent Na, K, and Rb; A=selected from the group consisting of divalent Mg, Mn, Zn, and Cd; B=selected from the group consisting of trivalent B, Al and Ga; C=selected from the group consisting of tetravalent Si, Ge, Ti, and Hf; D=selected from the group consisting of monovalent Li, and Cu; E=selected for the group consisting of P, V, Nb, and Ta; ES=selected from the group consisting of divalent Eu, Sm and Yb; RE=selected from the group consisting of trivalent Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, and Tm; 0?x?0.2; 0?y?0.2; 0<x+y?0.4; 0?z<1; 0?n?0.5; 0?a?4 (such as 2?a?3); 0?b?4; 0?c?4; 0?d?4; 0?e?4; a+b+c+d+e=4; and 2a+3b+4c+d+5e=10?y?n+z.