Nitride-Based Red-Emitting Phosphors in RGB (Red-Green-Blue) Lighting Systems
    8.
    发明申请
    Nitride-Based Red-Emitting Phosphors in RGB (Red-Green-Blue) Lighting Systems 审中-公开
    RGB(红 - 绿 - 蓝)照明系统中的氮化物红光发射荧光体

    公开(公告)号:US20150315464A1

    公开(公告)日:2015-11-05

    申请号:US14618207

    申请日:2015-02-10

    IPC分类号: C09K11/77 F21V9/16

    摘要: Embodiments of the present invention are directed to nitride-based, red-emitting phosphors in red, green, and blue (RGB) lighting systems, which in turn may be used in backlighting displays and warm white-light applications. In particular embodiments, the red-emitting phosphor is based on CaAlSiN3 type compounds activated with divalent europium. In one embodiment, the nitride-based, red emitting compound contains a solid solution of calcium and strontium compounds (Ca,Sr)AlSiN3:Eu2+, wherein the impurity oxygen content is less than about 2 percent by weight. In another embodiment, the (Ca,Sr)AlSiN3:Eu2+ compounds further contains a halogen in an amount ranging from about zero to about 2 atomic percent, where the halogen may be fluorine (F), chlorine (Cl), or any combination thereof. In one embodiment at least half of the halogen is distributed on 2-fold coordinated nitrogen (N2) sites relative to 3-fold coordinated nitrogen (N3) sites.

    摘要翻译: 本发明的实施例涉及红色,绿色和蓝色(RGB)照明系统中的基于氮化物的红色发光荧光体,其又可用于背光显示器和暖白光应用。 在具体实施方案中,红色发光荧光体基于用二价铕活化的CaAlSiN 3型化合物。 在一个实施方案中,基于氮化物的红色发射化合物含有钙和锶化合物(Ca,Sr)AlSiN 3:Eu 2+的固溶体,其中杂质氧含量小于约2重量%。 在另一个实施方案中,(Ca,Sr)AlSiN 3:Eu 2+化合物还含有量为约0至约2原子%的卤素,其中卤素可以是氟(F),氯(Cl)或其任何组合 。 在一个实施方案中,至少一半的卤素相对于3倍配位的氮(N 3)位点分布在2倍配位的氮(N 2)位点上。