ORGANIC LUMINESCENT ELEMENT
    2.
    发明公开

    公开(公告)号:US20240268225A1

    公开(公告)日:2024-08-08

    申请号:US18561774

    申请日:2022-03-30

    申请人: KYULUX, INC.

    IPC分类号: H10K85/60 C09K11/06 H10K50/11

    摘要: This organic light emitting element comprises: a light emitting layer that contains a first organic compound (1), a second organic compound (2) that is a delayed fluorescent material, and a third organic compound (3); and an adjacent layer that is adjacent to the light emitting layer and contains the first organic compound (1). This organic light emitting element satisfies relational expression ES1(1)>ES1(2)>ES1(3), and has a long emission lifetime and high luminous efficiency. In the relational expression. ES1 represents the lowest excited singlet energy.

    Organic electroluminescent device

    公开(公告)号:US11450817B2

    公开(公告)日:2022-09-20

    申请号:US17071719

    申请日:2020-10-15

    申请人: KYULUX, INC.

    IPC分类号: H01L51/00 H01L51/50 C09K11/06

    摘要: An organic electroluminescent device having an anode, a cathode, and a light emitting layer between the anode and the cathode, in which the light emitting layer contains a first organic compound, a second organic compound, and a third organic compound that satisfy the following expression (A), the second organic compound is a delayed fluorescent material, and the third organic compound is a light emitting material, is capable of enhancing the light emission efficiency. ES1(A), ES1(B) and ES1(C) represent a lowest singlet excitation energy level of the first, second and third organic compound, respectively. ES1(A)>ES1(B)>ES1(C)  (A)