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    RED PHOSPHOR, PREPARATION METHOD THEREOF AND LIGHT-EMITTING DEVICE PREPARED THEREFROM
    1.
    发明申请
    RED PHOSPHOR, PREPARATION METHOD THEREOF AND LIGHT-EMITTING DEVICE PREPARED THEREFROM 有权

    公开(公告)号：US20210155848A1

    公开(公告)日：2021-05-27

    申请号：US16612299

    申请日：2017-10-18

    Applicant: GRIREM ADVANCED MATERIALS CO., LTD.

    Inventor： Ronghui LIU ,  Guantong CHEN ,  Yuanhong LIU ,  Xiaole MA

    IPC: C09K11/67 ,  C09K11/02 ,  H01L33/50

    Abstract: The present invention relates to a red phosphor, a preparation method thereof and a light-emitting device prepared therefrom. A particle of the red phosphor consists of a phosphor inner core having a chemical formula of Ax1Gez1F6:y1Mn4+ and an outer shell having a chemical formula of Bx2Mz2F6:y2Mn4+, wherein 1.596≤x1≤2.2, 1.6≤x2≤2.2, 0.001≤y1≤0.2, 0≤y2≤0.2, 0.9≤z1≤1.1, and 0.9≤z2≤1.1; A and B are independently selected from alkali metal elements; and M is Si, or Si and Ge. The red phosphor provided by the present invention has high luminous efficiency and stability. Moreover, the phosphor alone or in combination with other luminescent materials can be used for preparing a light-emitting device with high performance.

    LUTETIUM NITRIDE-BASED PHOSPHOR AND LIGHT EMITTING DEVICE COMPRISING SAME
    2.
    发明申请
    LUTETIUM NITRIDE-BASED PHOSPHOR AND LIGHT EMITTING DEVICE COMPRISING SAME 审中-公开

    公开(公告)号：US20190225882A1

    公开(公告)日：2019-07-25

    申请号：US16313894

    申请日：2017-06-30

    Applicant: GRIREM ADVANCED MATERIALS CO., LTD.

    Inventor： Ronghui LIU ,  Weidong ZHUANG ,  Fu DU ,  Yuanhong LIU ,  Wei GAO ,  Xia ZHANG ,  Huibing XU ,  Chunpei YAN ,  Xiaowei ZHANG

    IPC: C09K11/77 ,  C09K11/08 ,  H01L33/50

    Abstract: A lutetium nitride-based phosphor and a light emitting device comprising the same, wherein the lutetium nitride-based phosphor comprises an inorganic compound, and the composition of the inorganic compound comprises at least an M element, an A element, a D element and an R element; the M element is one or two elements selected from a group consisting of Lu, La, Pr, Nd, Sm, Y, Tb and Gd, and necessarily comprises Lu; the A element is Si and/or Ge; the D element is one or two elements selected from a group consisting of O, N and F, and necessarily comprises N; the R element is Ce and/or Dy, and the atomic molar ratio of the Lu element in the M element is greater than 50%. Because the ion radius of Lu3+ is smaller than the ion radius of La3+, the light color performance thereof can be flexibly adjusted according to needs.

    OPTICAL DEVICE
    3.
    发明申请
    OPTICAL DEVICE 有权

    公开(公告)号：US20220173282A1

    公开(公告)日：2022-06-02

    申请号：US17254228

    申请日：2019-08-22

    Applicant: GRIREM ADVANCED MATERIALS CO., LTD

    Inventor： Ronghui LIU ,  Yuanhong LIU ,  Xiaoxia CHEN ,  Yuan XUE ,  Xiaole MA

    IPC: H01L33/50 ,  C09K11/77

    Abstract: An optical device includes an LED chip, a visible-light luminescent material, and a near-infrared luminescent material, wherein a luminous power of light emitted by the near-infrared and visible-light luminescent materials in a band of 650-1000 nm under the excitation of the LED chip is A, and a sum of a luminous power of light emitted by the near-infrared and visible-light luminescent materials in a band of 350-650 nm under the excitation of the LED chip and a luminous power of residual light emitted by the LED chip in the band of 350-650 nm after the LED chip excites the near-infrared and visible-light luminescent materials is B, with B/A*100% being 0.1%-10%. According to the implementation where the optical device employs the LED chip to combine the near-infrared luminescent material and the visible-light luminescent material simultaneously.

    RED LIGHT AND NEAR-INFRARED LIGHT-EMITTING MATERIAL AND LIGHT-EMITTING DEVICE
    4.
    发明申请
    RED LIGHT AND NEAR-INFRARED LIGHT-EMITTING MATERIAL AND LIGHT-EMITTING DEVICE 有权

    公开(公告)号：US20220119704A1

    公开(公告)日：2022-04-21

    申请号：US17254225

    申请日：2019-07-09

    Applicant: GRIREM ADVANCED MATERIALS CO., LTD

    Inventor： Ronghui LIU ,  Yuanhong LIU ,  Xiaoxia CHEN ,  Xiaole MA ,  Yuan XUE ,  Tongyu GAO

    IPC: C09K11/77 ,  H01L33/50 ,  H01L33/26

    Abstract: The present invention discloses a red light and near-infrared light-emitting material and a light-emitting device. The red light and near-infrared light-emitting material contains a compound represented by a molecular formula, xA2O3.yIn2O3.bR2O3, wherein the element A is Sc and/or Ga; the element R is one or two of Cr, Yb, Nd or Er and necessarily includes Cr; and 0.001≤x≤1, 0.001≤y≤1, 0.001≤b≤0.2, and 0.001≤b/(x+y)≤0.2. The light-emitting material can be excited by a technically mature blue light source to emit light with a high-intensity wide-spectrum or multiple spectra. Compared with existing materials, the light-emitting material has higher luminescent intensity. The light-emitting device uses an LED chip to combine an infrared light-emitting material and a visible light light-emitting material. In this way, the same LED chip can emit near-infrared light and visible light at the same time, which greatly simplifies the packaging process and reduces the packaging cost.

    OPTICAL DEVICE
    8.
    发明申请
    OPTICAL DEVICE 有权

    公开(公告)号：US20220173281A1

    公开(公告)日：2022-06-02

    申请号：US17254226

    申请日：2019-08-22

    Applicant: GRIREM ADVANCED MATERIALS CO., LTD

    Inventor： Ronghui LIU ,  Yuanhong LIU ,  Yanfeng LI ,  Xiaoxia CHEN ,  Xiaole MA ,  Yuan XUE

    IPC: H01L33/50 ,  C09K11/77 ,  H01L33/30 ,  G02B5/20

    Abstract: An optical device includes an LED chip, a light absorber and/or visible-light luminescent material, and a near-infrared luminescent material, wherein a luminous power of light emitted by the near-infrared luminescent material and the light absorber and/or visible-light luminescent material in a band of 650-1000 nm under the excitation of the LED chip is A, and a sum of a luminous power of light emitted by the near-infrared and visible-light luminescent materials in a band of 350-650 nm under the excitation of the LED chip and a luminous power of residual light emitted by the LED chip in the band of 350-650 nm after the LED chip excites the near-infrared and visible-light luminescent materials is B, with B/A*100% being 0.1%-10%. According to the implementation where the optical device employs the LED chip to combine the near-infrared luminescent material and the light absorber and/or visible-light luminescent material simultaneously.

    Nitride Luminescent Material and Light Emitting Device Comprising Same
    9.
    发明申请
    Nitride Luminescent Material and Light Emitting Device Comprising Same 有权

    公开(公告)号：US20210403808A1

    公开(公告)日：2021-12-30

    申请号：US16469114

    申请日：2018-09-29

    Applicant: GRIREM ADVANCED MATERIALS CO., LTD. ,  GUOKE RE ADVANCED MATERIALS CO., LTD.

    Inventor： Ronghui LIU ,  LIU LIU ,  Xia ZHANG ,  Wei GAO ,  Xiaole MA ,  Huibing XU

    IPC: C09K11/77 ,  H01L33/50 ,  C01F17/30

    Abstract: The present disclosure relates to the technical field of luminescent materials, and more particularly, to a nitride luminescent material and a light emitting device comprising the luminescent material. The nitride luminescent material recited in the present disclosure includes an inorganic compound with the structural composition RwQxSiyNz, the excitation wavelength of the luminescent material is between 300-650 nm, and the emission main peak of the NIR light region is broadband emission between 900-1100 nm; the excitation wavelength of the luminescent material is relatively broad and capable of excellent absorption of ultraviolet visible light, and has more intensive NIR emission as compared with NIR organic luminescent materials and inorganic luminescent materials of other systems, so it is an ideal application material for NIR devices.

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