ORANGE-YELLOW-EMITTING PHOSPHOR FOR LEDS, PREPARATION METHOD AND USE THEREOF

    公开(公告)号:US20180194998A1

    公开(公告)日:2018-07-12

    申请号:US15329390

    申请日:2015-11-16

    IPC分类号: C09K11/71 H01L33/50

    摘要: This invention provides an orange-yellow-emitting phosphor, the preparation method and the use thereof. This orange-yellow-emitting phosphor has a general formula represented by formula I: Sr9−a−b−xMaMg1.5+b(PO4)7:xEu2+ formula I; wherein in formula I, said M is one or two of Ca and Ba; and 0.001≤x≤0.9, 0≤a≤1.0, 0≤b≤2.3. This orange-yellow-emitting phosphor uses a phosphate as the host material and Eu2+ ions as activation ions. The chemical properties of the phosphor are stable. The phosphor has relatively wide excitation band and emission band. And the red component in its emission spectrum is abundant, therefore, coupling the blue InGaN chip with the orange-yellow-emitting phosphor provided by this invention can obtain warm white light. The phosphor is radiation free, therefore, it will not be harmful to the environment. It is indicated by experimental results that this orange-yellow-emitting phosphor can be effectively excited by light at a wavelength of 250-500 nm and emits a wide peak at 470-850 nm, wherein the main emission peaks lie at about 523 nm and 620 nm. This preparation method is simple, and the cost is relatively low, so it is amenable to industrial production.

    Inorganic optical brightener
    3.
    发明授权
    Inorganic optical brightener 有权
    无机荧光增白剂

    公开(公告)号:US08945239B2

    公开(公告)日:2015-02-03

    申请号:US12226296

    申请日:2007-04-10

    摘要: The invention relates to novel inorganic brighteners, a process for their preparation and their use for brightening substrates. More specifically, the novel inorganic brighteners are phosphors characterized in that they have (i) an absorption maximum in the range of from 350 to 375 nm; (ii) a steep decrease of the absorption band near 400 nm; (iii) a quantum yield of the phosphorescence of at least 0.8; and (iv) a phosphorescence maximum in the range between 415 and 445 nm.

    摘要翻译: 本发明涉及新型无机增白剂,其制备方法及其对增亮底物的用途。 更具体地,新型无机增白剂是荧光体,其特征在于它们具有(i)在350至375nm范围内的最大吸收; (ii)接近400nm的吸收带急剧下降; (iii)磷光的量子产率至少为0.8; 和(iv)在415和445nm之间的范围内的磷光最大值。

    LIGHT EMITTING DEVICE
    5.
    发明申请
    LIGHT EMITTING DEVICE 有权
    发光装置

    公开(公告)号:US20130049574A1

    公开(公告)日:2013-02-28

    申请号:US13665744

    申请日:2012-10-31

    IPC分类号: H05B33/12

    摘要: A light emitting device is disclosed. The light emitting device may include a light emitting diode (LED) for emitting light and phosphor adjacent to the LED. The phosphor may be excitable by light emitted by the LED and may include a first compound having a host lattice comprising first ions and oxygen. In one embodiment, the host lattice may include silicon, the copper ions may be divalent copper ions and first compound may have an Olivin crystal structure, a β-K2SO4 crystal structure, a trigonal Glaserite (K3Na(SO4)2) or monoclinic Merwinite crystal structure, a tetragonal Ackermanite crystal structure, a tetragonal crystal structure or an orthorhombic crystal structure. In another embodiment, the copper ions do not act as luminescent ions upon excitation with the light emitted by the LED.

    摘要翻译: 公开了一种发光器件。 发光器件可以包括用于发射与LED邻近的光和磷光体的发光二极管(LED)。 磷光体可以由LED发出的光可激发,并且可以包括具有包含第一离子和氧的主晶格的第一化合物。 在一个实施方案中,主晶格可以包括硅,铜离子可以是二价铜离子,第一化合物可以具有橄榄石晶体结构,一种二氧化碳结晶结构,一种三角晶硅酸盐(K3Na(SO4)2))或单斜晶系 晶体结构,四方晶系晶体结构,四方晶体结构或正交晶体结构。 在另一个实施方案中,当由LED发射的光激发时,铜离子不起荧光离子的作用。

    NANOPARTICLE-DOPED POROUS BEAD AND FABRICATION METHOD THEREOF
    10.
    发明申请
    NANOPARTICLE-DOPED POROUS BEAD AND FABRICATION METHOD THEREOF 审中-公开
    纳米多孔多孔珠及其制备方法

    公开(公告)号:US20100224831A1

    公开(公告)日:2010-09-09

    申请号:US12618897

    申请日:2009-11-16

    IPC分类号: C09K11/54 C09K11/77 C09K11/08

    摘要: Disclosed are a nanoparticle-doped porous bead with a highly enhanced photoluminescence without wavelength shift and improved durability, and a fabrication method thereof, the nanoparticle-doped porous bead comprising porous beads, and nanoparticles radially bonded onto homocentric spheres of the porous beads by an electrostatic attractive force, the homocentric sphere located inside the porous bead near a surface thereof, wherein the nanoparticles are photoluminescent nanoparticles or mixed nanoparticles of photoluminescent nanoparticles and another nanoparticles, wherein the another nanoparticle is one or more than two mixed, selected from a group consisting of magnetic nanoparticle, metallic nanoparticle and metal oxide nanoparticle.

    摘要翻译: 公开了具有高波长漂移和改善的耐久性的高度增强的光致发光的纳米颗粒掺杂多孔珠及其制造方法,包含多孔珠的纳米颗粒掺杂多孔珠粒和通过静电将多孔珠粒的均心球体径向结合的纳米颗粒 吸引力,位于其表面附近的多孔珠内的同心球,其中所述纳米颗粒是光致发光纳米颗粒或光致发光纳米颗粒和另一种纳米颗粒的混合纳米颗粒,其中所述另一种纳米颗粒是一种或两种以上混合的,选自 磁性纳米颗粒,金属纳米颗粒和金属氧化物纳米颗粒。