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    • 71. 发明授权
    • White light emitting phosphor blends for LED devices
    • 用于LED器件的白色发光荧光粉混合物
    • US06939481B2
    • 2005-09-06
    • US10617028
    • 2003-07-11
    • Alok Mani SrivastavaHolly Ann ComanzoThomas Francis McNulty
    • Alok Mani SrivastavaHolly Ann ComanzoThomas Francis McNulty
    • C09K11/64C09K11/73C09K11/77H01L33/50C09K11/08
    • H01L33/504C09K11/7734H01L2224/48091H01L2924/12044Y02B20/181H01L2924/00014H01L2924/00
    • There is provided white light illumination system including a radiation source, a first luminescent material having a peak emission wavelength of about 575 to about 620 nm, a second luminescent material having a peak emission wavelength of about 495 to about 550 nm, which is different from the first luminescent material and a third luminescent material having a peak emission wavelength of about 420 to about 480 nm, which is different from the first and second luminescent materials. The LED may be a UV LED and the luminescent materials may be a blend of three or four phosphors. The first phosphor may be an orange emitting Eu2+, Mn2+ activated strontium pyrophosphate, Sr2P2O7:Eu2+, Mn2+. The second phosphor may be a blue-green emitting Eu2+ activated barium silicate, (Ba,Sr,Ca)2SiO4:Eu2+. The third phosphor may be a blue emitting SECA phosphor, (Sr,Ba,Ca)5(PO4)3Cl:Eu2+. Optionally, the fourth phosphor may be a red emitting Mn4+ activated magnesium fluorogermanate, 3.5MgO*0.5MgF2*GeO2:Mn4+. A human observer perceives the combination of the orange, blue-green, blue and/or red phosphor emissions as white light.
    • 提供了包括辐射源的白光照明系统,具有约575至约620nm的峰值发射波长的第一发光材料,具有约495至约550nm的峰值发射波长的第二发光材料,其不同于 第一发光材料和具有约420至约480nm的峰值发射波长的第三发光材料,其不同于第一和第二发光材料。 LED可以是UV LED,发光材料可以是三种或四种荧光体的混合物。 第一种磷光体可以是发射发光的Eu 2+,Mn 2+激活的焦磷酸锶,Sr 2 P 2, Eu 2+,Eu 2+,Mn 2+。 第二荧光体可以是蓝绿色发射的Eu 2+活化的硅酸钡(Ba,Sr,Ca)2 SiO 4:Eu 2 + 。 第三荧光体可以是发蓝光的SECA磷光体(Sr,Ba,Ca)5(PO 4)3 Cl:Eu > 2 + 。 任选地,第四个磷光体可以是红色发射的Mn 4+活化的氟化氟钼酸镁,3.5MgO * 0.5MgF 2 * GeO 2:Mn, SUP> 4 + 。 人类观察者将橙色,蓝绿色,蓝色和/或红色荧光体发射的组合视为白光。
    • 79. 发明授权
    • Oxy-nitride pyrosilicate based persistent phosphors
    • 基于氧氮化物的高硅酸盐基持久性荧光体
    • US08178002B2
    • 2012-05-15
    • US12643132
    • 2009-12-21
    • Sam Joseph CamardelloHolly Ann ComanzoAlok Mani Srivastava
    • Sam Joseph CamardelloHolly Ann ComanzoAlok Mani Srivastava
    • C09K11/54C09K11/66
    • C09K11/7792C09K11/0883
    • A blue or yellow persistent phosphor composition is provided, along with methods for making and using the composition. In one embodiment, the phosphor comprises a formula of Aa-b-c-BdCe(Of-gNg):Eub,-REc, wherein, A may be Sr, Ca, Ba, or a combination thereof; B may be Mg, Zn, Co, or a combination thereof; C may be Si, Ge, or a combination thereof; a is between 1 and 2.0; b is between 0.0005 and 0.1; c is between 0.0005 and 0.1; d is between 0.9 and 1; e is between 2 and 2.1; f is between 6 and 7; g is between 0.001 and 0.1; and RE is Dy, Nd, Er, Ho, Tm, Yb or a combination thereof. Embodiments use Sr, Mg and Si to produce blue phosphors or Ca, Mg and Si to produce yellow phosphors. In other embodiments, methods for making and applications for using, including uses in toys, emergency equipment, clothing, and instrument panels, are provided.
    • 提供蓝色或黄色持久荧光粉组合物,以及制备和使用组合物的方法。 在一个实施方案中,磷光体包括Aa-b-c-BdCe(Of-gNg)的式:Eub,-REc,其中A可以是Sr,Ca,Ba或其组合; B可以是Mg,Zn,Co或它们的组合; C可以是Si,Ge或它们的组合; a在1和2.0之间; b在0.0005和0.1之间; c在0.0005和0.1之间; d在0.9和1之间; e在2和2.1之间; f在6和7之间; g在0.001至0.1之间; RE为Dy,Nd,Er,Ho,Tm,Yb或其组合。 实施例使用Sr,Mg和Si来产生蓝色荧光体或Ca,Mg和Si以产生黄色荧光体。 在其他实施例中,提供了用于制造和应用的方法,包括玩具,应急设备,服装和仪表板中的用途。