ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

    公开(公告)号:US20190036055A1

    公开(公告)日:2019-01-31

    申请号:US16037167

    申请日:2018-07-17

    IPC分类号: H01L51/50 H01L51/52 H01L51/00

    摘要: An OLED is disclosed whose emissive layer has a first host and an emitter, where the emitter is a phosphorescent metal complex or a delayed fluorescent emitter, where EHIT, the T1 triplet energy of the first host, is higher than EET, the T1 triplet energy of the emitter, where EET is at least 2.50 eV, where the LUMO energy of the first host is higher than the HOMO energy of the emitter, where the absolute value of the difference between the HOMO energy of the emitter and the LUMO energy of the first host is ΔE1, where a≤ΔE1−EET≤b; and where a≥0.05 eV, and b≤0.60 eV.

    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

    公开(公告)号:US20240065094A1

    公开(公告)日:2024-02-22

    申请号:US18480100

    申请日:2023-10-03

    IPC分类号: H10K85/40 C09K11/06 C07F15/00

    摘要: A compound comprising a first ligand LA of Formula I,




    is provided. In Formula I, moiety C is a monocyclic ring or fused polycyclic system; each of X1 to X6 is C or N; K is a direct bond or a linker; at least one of RB or RC has the formula -L-SiR1R2R3, or -L-GeR1R2R3; L is a direct bond or an organic linker; each Rα, Rβ, R1, R2, R3, RA, RB, and RC is hydrogen or a General Substituent defined herein; LA is coordinated to a metal M by the dashed lines in Formula I; and M has an atomic mass of at least 40 and may be coordinated to other ligands. Formulations, OLEDs, and consumer products containing the compound are also provided.