发明名称 |
Coated narrow band red-emitting fluorosilicates for semiconductor LEDS |
摘要 |
The invention provides a lighting unit comprising a light source, configured to generate light source light and a particulate 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), wherein the particulate luminescent material comprises particles comprising cores, said cores comprising a phosphor comprising M′xM2-2xAX6 doped with tetravalent manganese, wherein M′ comprises an alkaline earth cation, M comprises an alkaline cation, and x is in the range of 0-1, wherein A comprises a tetravalent cation, at least comprising silicon, wherein X comprises a monovalent anion, at least comprising fluorine, and wherein the particles further comprise a metal phosphate based coating, wherein the metal of the metal phosphate based coating is selected from the group consisting of Ti, Si and Al. |
申请公布号 |
US9580643(B2) |
申请公布日期 |
2017.02.28 |
申请号 |
US201314376451 |
申请日期 |
2013.02.13 |
申请人 |
KONINKLIJKE PHILIPS N.V. |
发明人 |
Weiler Volker;Schmidt Peter Josef |
分类号 |
C09K11/02;C09K11/67;H01L33/50;C09K11/61 |
主分类号 |
C09K11/02 |
代理机构 |
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代理人 |
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主权项 |
1. A lighting unit comprising;
a light source, configured to generate light source light; and a particulate 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), wherein the particulate luminescent material comprises particles comprising cores, said cores comprising a phosphor comprising M′xM2-2xAX6 doped with tetravalent manganese, wherein M′ comprises an alkaline earth cation, M comprises an alkaline cation, and x is in the range of 0-1, wherein A comprises a tetravalent cation, at least comprising silicon, wherein X comprises a monovalent anion, at least comprising fluorine, and wherein the particles further comprise a metal phosphate based coating, wherein the metal of the metal phosphate based coating is selected from the group consisting of Ti, Si, and Al. |
地址 |
Eindhoven NL |