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    PEROVSKITE LIGHT-EMITTING DEVICE
    2.
    发明申请
    PEROVSKITE LIGHT-EMITTING DEVICE 有权

    公开(公告)号：US20210265574A1

    公开(公告)日：2021-08-26

    申请号：US17213211

    申请日：2021-03-25

    Applicant: SN DISPLAY CO., LTD.

    Inventor： Tae-Woo LEE ,  Sanghyuk IM ,  Himchan CHO ,  Young-Hoon KIM

    IPC: H01L51/00 ,  C09K11/02 ,  H01L31/00 ,  H01L31/032 ,  H01L31/0352 ,  C01G21/16 ,  C07F7/24 ,  C09K11/06 ,  C09K11/66 ,  H01L51/50

    Abstract: A light-emitting layer for a halide perovskite light-emitting device, a method for manufacturing the same and a perovskite light-emitting device using the same are disclosed. The light-emitting layer can be manufactured by forming a first nanoparticle thin film by coating, on a member, a solution comprising halide perovskite nanoparticles having a halide perovskite nanocrystalline structure. Thereby, a nanoparticle light emitter has therein a halide perovskite having a crystal structure in which FCC and BCC are combined; and can show high color purity. In addition, it is possible to improve the luminescence efficiency and luminance of a device by making perovskite as nanoparticles and then introducing the same into a light-emitting layer.

    METHOD FOR MANUFACTURING PEROVSKITE NANOCRYSTAL PARTICLE LIGHT-EMITTER WHERE ORGANIC LIGAND IS SUBSTITUTED, NANOCRYSTAL PARTICLE LIGHT-EMITTER MANUFACTURED THEREBY, AND LIGHT EMITTING DEVICE USING SAME
    5.
    发明申请
    METHOD FOR MANUFACTURING PEROVSKITE NANOCRYSTAL PARTICLE LIGHT-EMITTER WHERE ORGANIC LIGAND IS SUBSTITUTED, NANOCRYSTAL PARTICLE LIGHT-EMITTER MANUFACTURED THEREBY, AND LIGHT EMITTING DEVICE USING SAME 有权

    公开(公告)号：US20220267669A1

    公开(公告)日：2022-08-25

    申请号：US17740039

    申请日：2022-05-09

    Applicant: SN DISPLAY CO., LTD.

    Inventor： Tae-Woo LEE ,  Sanghyuk IM ,  Young-Hoon KIM ,  Himchan CHO

    IPC: C09K11/06 ,  C09K11/02 ,  H01G9/20 ,  H01L51/00 ,  H01L51/50

    Abstract: Provided are a method for manufacturing a perovskite nanocrystal particle light-emitter where an organic ligand is substituted, a light-emitter manufactured thereby, and a light emitting device using the same. A method for manufacturing an organic-inorganic-hybrid perovskite nanocrystal particle light-emitter where an organic ligand is substituted may comprise the steps of: preparing a solution including an organic-inorganic-hybrid perovskite nanocrystal particle light-emitter, wherein the organic-inorganic-hybrid perovskite nanocrystal particle light-emitter comprises an organic-inorganic-hybrid perovskite nanocrystal structure and a plurality of first organic ligands surrounding the organic-inorganic-hybrid perovskite nanocrystal structure; and adding, to the solution, a second organic ligand which is shorter than the first organic ligands or includes a phenyl group or a fluorine group, thereby substitutes the first organic ligands with the second organic ligand. Thus, since energy transfer or charge injection into the nanocrystal structure increases through ligand substitution, it is possible to further increase light emitting efficiency and increase durability and stability by means of a hydrophobic ligand.

    PEROVSKITE NANOCRYSTAL PARTICLE LIGHT-EMITTER WHERE ORGANIC LIGAND IS SUBSTITUTED, AND OPTOELECTRONIC DEVICES USING SAME
    6.
    发明申请
    PEROVSKITE NANOCRYSTAL PARTICLE LIGHT-EMITTER WHERE ORGANIC LIGAND IS SUBSTITUTED, AND OPTOELECTRONIC DEVICES USING SAME 有权

    公开(公告)号：US20250043177A1

    公开(公告)日：2025-02-06

    申请号：US18922301

    申请日：2024-10-21

    Applicant: SN DISPLAY CO., LTD.

    Inventor： Tae-Woo LEE ,  Sanghyuk IM ,  Young-Hoon KIM ,  Himchan CHO

    IPC: C09K11/06 ,  C09K11/02 ,  H01G9/20 ,  H10K30/30 ,  H10K50/11 ,  H10K50/135 ,  H10K71/12 ,  H10K85/30

    Abstract: Provided are a perovskite nanocrystal particle light-emitter where an organic ligand is substituted, and optoelectronic devices using the same. A method for manufacturing a perovskite nanocrystal particle light-emitter where an organic ligand surrounding a perovskite nanocrystal is substituted may comprise steps of: preparing a solution including nanocrystal particle light-emitter, wherein the perovskite nanocrystal particle light-emitter comprises a perovskite nanocrystal structure and a plurality of first organic ligands surrounding the perovskite nanocrystal structure; and adding, to the solution, a second organic ligand which is shorter than the first organic ligands or includes a phenyl group or a fluorine group, thereby substitutes the first organic ligands with the second organic ligand. Since energy transfer or charge injection into the nanocrystal structure increases through ligand substitution, luminescence efficiency in light-emitting devices and power conversion efficiency in solar cells can be further increased and durability and stability increased via a hydrophobic ligand.

    PEROVSKITE OPTOELECTRONIC DEVICES AND METHOD FOR MANUFACTURING SAME
    9.
    发明申请
    PEROVSKITE OPTOELECTRONIC DEVICES AND METHOD FOR MANUFACTURING SAME 有权

    公开(公告)号：US20220199933A1

    公开(公告)日：2022-06-23

    申请号：US17688894

    申请日：2022-03-07

    Applicant: SN DISPLAY CO., LTD.

    Inventor： Tae-Woo LEE ,  Sanghyuk IM ,  Himchan CHO ,  Young-Hoon KIM

    IPC: H01L51/50 ,  C09D127/18 ,  H01B1/12 ,  C09K11/06 ,  H01G9/20 ,  H01L51/00

    Abstract: Provided are a perovskite optoelectronic device containing an exciton buffer layer, and a method for manufacturing the same. The optoelectronic device of the present invention comprises: an exciton buffer layer in which a first electrode, a conductive layer disposed on the first electrode and comprising a conductive material, and a surface buffer layer containing fluorine-based material having lower surface energy than the conductive material are sequentially deposited; a photoactive layer disposed on the exciton buffer layer and containing a perovskite photoactive layer; and a second electrode disposed on the photoactive layer. Accordingly, a perovskite is formed with a combined FCC and BSS crystal structure in a nanoparticle photoactive layer. The present invention can also form a lamellar or layered structure in which an organic plane and an inorganic plane are alternatively deposited; and an exciton can be bound by the inorganic plane, thereby being capable of expressing high color purity.

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